20856006400

素因数分解:

$2^8\times 5^2\times {\mathrm{31}}^2\times {\mathrm{3391}}^1$

素因数の和:3479

約数の個数: 162

約数和(自身を含む): 53356543296

約数和(自身を除く): 32500536896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 128, 155, 160, 200, 248, 256, 310, 320, 400, 496, 620, 640, 775, 800, 961, 992, 1240, 1280, 1550, 1600, 1922, 1984, 2480, 3100, 3200, 3391, 3844, 3968, 4805, 4960, 6200, 6400, 6782, 7688, 7936, 9610, 9920, 12400, 13564, 15376, 16955, 19220, 19840, 24025, 24800, 27128, 30752, 33910, 38440, 39680, 48050, 49600, 54256, 61504, 67820, 76880, 84775, 96100, 99200, 105121, 108512, 123008, 135640, 153760, 169550, 192200, 198400, 210242, 217024, 246016, 271280, 307520, 339100, 384400, 420484, 434048, 525605, 542560, 615040, 678200, 768800, 840968, 868096, 1051210, 1085120, 1230080, 1356400, 1537600, 1681936, 2102420, 2170240, 2628025, 2712800, 3075200, 3258751, 3363872, 4204840, 4340480, 5256050, 5425600, 6150400, 6517502, 6727744, 8409680, 10512100, 10851200, 13035004, 13455488, 16293755, 16819360, 21024200, 21702400, 26070008, 26910976, 32587510, 33638720, 42048400, 52140016, 65175020, 67277440, 81468775, 84096800, 104280032, 130350040, 134554880, 162937550, 168193600, 208560064, 260700080, 325875100, 336387200, 417120128, 521400160, 651750200, 672774400, 834240256, 1042800320, 1303500400, 2085600640, 2607000800, 4171201280, 5214001600, 10428003200, 20856006400]

約数ペア:

[(1, 20856006400), (2, 10428003200), (4, 5214001600), (5, 4171201280), (8, 2607000800), (10, 2085600640), (16, 1303500400), (20, 1042800320), (25, 834240256), (31, 672774400), (32, 651750200), (40, 521400160), (50, 417120128), (62, 336387200), (64, 325875100), (80, 260700080), (100, 208560064), (124, 168193600), (128, 162937550), (155, 134554880), (160, 130350040), (200, 104280032), (248, 84096800), (256, 81468775), (310, 67277440), (320, 65175020), (400, 52140016), (496, 42048400), (620, 33638720), (640, 32587510), (775, 26910976), (800, 26070008), (961, 21702400), (992, 21024200), (1240, 16819360), (1280, 16293755), (1550, 13455488), (1600, 13035004), (1922, 10851200), (1984, 10512100), (2480, 8409680), (3100, 6727744), (3200, 6517502), (3391, 6150400), (3844, 5425600), (3968, 5256050), (4805, 4340480), (4960, 4204840), (6200, 3363872), (6400, 3258751), (6782, 3075200), (7688, 2712800), (7936, 2628025), (9610, 2170240), (9920, 2102420), (12400, 1681936), (13564, 1537600), (15376, 1356400), (16955, 1230080), (19220, 1085120), (19840, 1051210), (24025, 868096), (24800, 840968), (27128, 768800), (30752, 678200), (33910, 615040), (38440, 542560), (39680, 525605), (48050, 434048), (49600, 420484), (54256, 384400), (61504, 339100), (67820, 307520), (76880, 271280), (84775, 246016), (96100, 217024), (99200, 210242), (105121, 198400), (108512, 192200), (123008, 169550), (135640, 153760)]