20516790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{821}}^1$

素因数の和:862

約数の個数: 96

約数和(自身を含む): 60722784

約数和(自身を除く): 40205994

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 49, 51, 70, 85, 98, 102, 105, 119, 147, 170, 210, 238, 245, 255, 294, 357, 490, 510, 595, 714, 735, 821, 833, 1190, 1470, 1642, 1666, 1785, 2463, 2499, 3570, 4105, 4165, 4926, 4998, 5747, 8210, 8330, 11494, 12315, 12495, 13957, 17241, 24630, 24990, 27914, 28735, 34482, 40229, 41871, 57470, 69785, 80458, 83742, 86205, 97699, 120687, 139570, 172410, 195398, 201145, 209355, 241374, 293097, 402290, 418710, 488495, 586194, 603435, 683893, 976990, 1206870, 1367786, 1465485, 2051679, 2930970, 3419465, 4103358, 6838930, 10258395, 20516790]

約数ペア:

[(1, 20516790), (2, 10258395), (3, 6838930), (5, 4103358), (6, 3419465), (7, 2930970), (10, 2051679), (14, 1465485), (15, 1367786), (17, 1206870), (21, 976990), (30, 683893), (34, 603435), (35, 586194), (42, 488495), (49, 418710), (51, 402290), (70, 293097), (85, 241374), (98, 209355), (102, 201145), (105, 195398), (119, 172410), (147, 139570), (170, 120687), (210, 97699), (238, 86205), (245, 83742), (255, 80458), (294, 69785), (357, 57470), (490, 41871), (510, 40229), (595, 34482), (714, 28735), (735, 27914), (821, 24990), (833, 24630), (1190, 17241), (1470, 13957), (1642, 12495), (1666, 12315), (1785, 11494), (2463, 8330), (2499, 8210), (3570, 5747), (4105, 4998), (4165, 4926)]