18987750

素因数分解:

$2^1\times 3^3\times 5^3\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:152

約数の個数: 128

約数和(自身を含む): 55036800

約数和(自身を除く): 36049050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 29, 30, 45, 50, 54, 58, 75, 87, 90, 97, 125, 135, 145, 150, 174, 194, 225, 250, 261, 270, 290, 291, 375, 435, 450, 485, 522, 582, 675, 725, 750, 783, 870, 873, 970, 1125, 1305, 1350, 1450, 1455, 1566, 1746, 2175, 2250, 2425, 2610, 2619, 2813, 2910, 3375, 3625, 3915, 4350, 4365, 4850, 5238, 5626, 6525, 6750, 7250, 7275, 7830, 8439, 8730, 10875, 12125, 13050, 13095, 14065, 14550, 16878, 19575, 21750, 21825, 24250, 25317, 26190, 28130, 32625, 36375, 39150, 42195, 43650, 50634, 65250, 65475, 70325, 72750, 75951, 84390, 97875, 109125, 126585, 130950, 140650, 151902, 195750, 210975, 218250, 253170, 327375, 351625, 379755, 421950, 632925, 654750, 703250, 759510, 1054875, 1265850, 1898775, 2109750, 3164625, 3797550, 6329250, 9493875, 18987750]

約数ペア:

[(1, 18987750), (2, 9493875), (3, 6329250), (5, 3797550), (6, 3164625), (9, 2109750), (10, 1898775), (15, 1265850), (18, 1054875), (25, 759510), (27, 703250), (29, 654750), (30, 632925), (45, 421950), (50, 379755), (54, 351625), (58, 327375), (75, 253170), (87, 218250), (90, 210975), (97, 195750), (125, 151902), (135, 140650), (145, 130950), (150, 126585), (174, 109125), (194, 97875), (225, 84390), (250, 75951), (261, 72750), (270, 70325), (290, 65475), (291, 65250), (375, 50634), (435, 43650), (450, 42195), (485, 39150), (522, 36375), (582, 32625), (675, 28130), (725, 26190), (750, 25317), (783, 24250), (870, 21825), (873, 21750), (970, 19575), (1125, 16878), (1305, 14550), (1350, 14065), (1450, 13095), (1455, 13050), (1566, 12125), (1746, 10875), (2175, 8730), (2250, 8439), (2425, 7830), (2610, 7275), (2619, 7250), (2813, 6750), (2910, 6525), (3375, 5626), (3625, 5238), (3915, 4850), (4350, 4365)]