81891900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{4789}}^1$

素因数の和:4828

約数の個数: 108

約数和(自身を含む): 270251800

約数和(自身を除く): 188359900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 25, 30, 36, 38, 45, 50, 57, 60, 75, 76, 90, 95, 100, 114, 150, 171, 180, 190, 225, 228, 285, 300, 342, 380, 450, 475, 570, 684, 855, 900, 950, 1140, 1425, 1710, 1900, 2850, 3420, 4275, 4789, 5700, 8550, 9578, 14367, 17100, 19156, 23945, 28734, 43101, 47890, 57468, 71835, 86202, 90991, 95780, 119725, 143670, 172404, 181982, 215505, 239450, 272973, 287340, 359175, 363964, 431010, 454955, 478900, 545946, 718350, 818919, 862020, 909910, 1077525, 1091892, 1364865, 1436700, 1637838, 1819820, 2155050, 2274775, 2729730, 3275676, 4094595, 4310100, 4549550, 5459460, 6824325, 8189190, 9099100, 13648650, 16378380, 20472975, 27297300, 40945950, 81891900]

約数ペア:

[(1, 81891900), (2, 40945950), (3, 27297300), (4, 20472975), (5, 16378380), (6, 13648650), (9, 9099100), (10, 8189190), (12, 6824325), (15, 5459460), (18, 4549550), (19, 4310100), (20, 4094595), (25, 3275676), (30, 2729730), (36, 2274775), (38, 2155050), (45, 1819820), (50, 1637838), (57, 1436700), (60, 1364865), (75, 1091892), (76, 1077525), (90, 909910), (95, 862020), (100, 818919), (114, 718350), (150, 545946), (171, 478900), (180, 454955), (190, 431010), (225, 363964), (228, 359175), (285, 287340), (300, 272973), (342, 239450), (380, 215505), (450, 181982), (475, 172404), (570, 143670), (684, 119725), (855, 95780), (900, 90991), (950, 86202), (1140, 71835), (1425, 57468), (1710, 47890), (1900, 43101), (2850, 28734), (3420, 23945), (4275, 19156), (4789, 17100), (5700, 14367), (8550, 9578)]