87997840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:225

約数の個数: 160

約数和(自身を含む): 249698304

約数和(自身を除く): 161700464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 37, 40, 56, 62, 70, 74, 80, 112, 124, 137, 140, 148, 155, 185, 217, 248, 259, 274, 280, 296, 310, 370, 434, 496, 518, 548, 560, 592, 620, 685, 740, 868, 959, 1036, 1085, 1096, 1147, 1240, 1295, 1370, 1480, 1736, 1918, 2072, 2170, 2192, 2294, 2480, 2590, 2740, 2960, 3472, 3836, 4144, 4247, 4340, 4588, 4795, 5069, 5180, 5480, 5735, 7672, 8029, 8494, 8680, 9176, 9590, 10138, 10360, 10960, 11470, 15344, 16058, 16988, 17360, 18352, 19180, 20276, 20720, 21235, 22940, 25345, 29729, 32116, 33976, 35483, 38360, 40145, 40552, 42470, 45880, 50690, 59458, 64232, 67952, 70966, 76720, 80290, 81104, 84940, 91760, 101380, 118916, 128464, 141932, 148645, 157139, 160580, 169880, 177415, 202760, 237832, 283864, 297290, 314278, 321160, 339760, 354830, 405520, 475664, 567728, 594580, 628556, 642320, 709660, 785695, 1099973, 1189160, 1257112, 1419320, 1571390, 2199946, 2378320, 2514224, 2838640, 3142780, 4399892, 5499865, 6285560, 8799784, 10999730, 12571120, 17599568, 21999460, 43998920, 87997840]

約数ペア:

[(1, 87997840), (2, 43998920), (4, 21999460), (5, 17599568), (7, 12571120), (8, 10999730), (10, 8799784), (14, 6285560), (16, 5499865), (20, 4399892), (28, 3142780), (31, 2838640), (35, 2514224), (37, 2378320), (40, 2199946), (56, 1571390), (62, 1419320), (70, 1257112), (74, 1189160), (80, 1099973), (112, 785695), (124, 709660), (137, 642320), (140, 628556), (148, 594580), (155, 567728), (185, 475664), (217, 405520), (248, 354830), (259, 339760), (274, 321160), (280, 314278), (296, 297290), (310, 283864), (370, 237832), (434, 202760), (496, 177415), (518, 169880), (548, 160580), (560, 157139), (592, 148645), (620, 141932), (685, 128464), (740, 118916), (868, 101380), (959, 91760), (1036, 84940), (1085, 81104), (1096, 80290), (1147, 76720), (1240, 70966), (1295, 67952), (1370, 64232), (1480, 59458), (1736, 50690), (1918, 45880), (2072, 42470), (2170, 40552), (2192, 40145), (2294, 38360), (2480, 35483), (2590, 33976), (2740, 32116), (2960, 29729), (3472, 25345), (3836, 22940), (4144, 21235), (4247, 20720), (4340, 20276), (4588, 19180), (4795, 18352), (5069, 17360), (5180, 16988), (5480, 16058), (5735, 15344), (7672, 11470), (8029, 10960), (8494, 10360), (8680, 10138), (9176, 9590)]