213106400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1$

素因数の和:725

約数の個数: 144

約数和(自身を含む): 579212928

約数和(自身を除く): 366106528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 130, 155, 160, 200, 208, 248, 260, 310, 325, 400, 403, 416, 496, 520, 620, 650, 661, 775, 800, 806, 992, 1040, 1240, 1300, 1322, 1550, 1612, 2015, 2080, 2480, 2600, 2644, 3100, 3224, 3305, 4030, 4960, 5200, 5288, 6200, 6448, 6610, 8060, 8593, 10075, 10400, 10576, 12400, 12896, 13220, 16120, 16525, 17186, 20150, 20491, 21152, 24800, 26440, 32240, 33050, 34372, 40300, 40982, 42965, 52880, 64480, 66100, 68744, 80600, 81964, 85930, 102455, 105760, 132200, 137488, 161200, 163928, 171860, 204910, 214825, 264400, 266383, 274976, 322400, 327856, 343720, 409820, 429650, 512275, 528800, 532766, 655712, 687440, 819640, 859300, 1024550, 1065532, 1331915, 1374880, 1639280, 1718600, 2049100, 2131064, 2663830, 3278560, 3437200, 4098200, 4262128, 5327660, 6659575, 6874400, 8196400, 8524256, 10655320, 13319150, 16392800, 21310640, 26638300, 42621280, 53276600, 106553200, 213106400]

約数ペア:

[(1, 213106400), (2, 106553200), (4, 53276600), (5, 42621280), (8, 26638300), (10, 21310640), (13, 16392800), (16, 13319150), (20, 10655320), (25, 8524256), (26, 8196400), (31, 6874400), (32, 6659575), (40, 5327660), (50, 4262128), (52, 4098200), (62, 3437200), (65, 3278560), (80, 2663830), (100, 2131064), (104, 2049100), (124, 1718600), (130, 1639280), (155, 1374880), (160, 1331915), (200, 1065532), (208, 1024550), (248, 859300), (260, 819640), (310, 687440), (325, 655712), (400, 532766), (403, 528800), (416, 512275), (496, 429650), (520, 409820), (620, 343720), (650, 327856), (661, 322400), (775, 274976), (800, 266383), (806, 264400), (992, 214825), (1040, 204910), (1240, 171860), (1300, 163928), (1322, 161200), (1550, 137488), (1612, 132200), (2015, 105760), (2080, 102455), (2480, 85930), (2600, 81964), (2644, 80600), (3100, 68744), (3224, 66100), (3305, 64480), (4030, 52880), (4960, 42965), (5200, 40982), (5288, 40300), (6200, 34372), (6448, 33050), (6610, 32240), (8060, 26440), (8593, 24800), (10075, 21152), (10400, 20491), (10576, 20150), (12400, 17186), (12896, 16525), (13220, 16120)]