21268980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1$

素因数の和:731

約数の個数: 120

約数和(自身を含む): 70334880

約数和(自身を除く): 49065900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 691, 810, 855, 1026, 1140, 1382, 1539, 1620, 1710, 2052, 2073, 2565, 2764, 3078, 3420, 3455, 4146, 5130, 6156, 6219, 6910, 7695, 8292, 10260, 10365, 12438, 13129, 13820, 15390, 18657, 20730, 24876, 26258, 30780, 31095, 37314, 39387, 41460, 52516, 55971, 62190, 65645, 74628, 78774, 93285, 111942, 118161, 124380, 131290, 157548, 186570, 196935, 223884, 236322, 262580, 279855, 354483, 373140, 393870, 472644, 559710, 590805, 708966, 787740, 1063449, 1119420, 1181610, 1417932, 1772415, 2126898, 2363220, 3544830, 4253796, 5317245, 7089660, 10634490, 21268980]

約数ペア:

[(1, 21268980), (2, 10634490), (3, 7089660), (4, 5317245), (5, 4253796), (6, 3544830), (9, 2363220), (10, 2126898), (12, 1772415), (15, 1417932), (18, 1181610), (19, 1119420), (20, 1063449), (27, 787740), (30, 708966), (36, 590805), (38, 559710), (45, 472644), (54, 393870), (57, 373140), (60, 354483), (76, 279855), (81, 262580), (90, 236322), (95, 223884), (108, 196935), (114, 186570), (135, 157548), (162, 131290), (171, 124380), (180, 118161), (190, 111942), (228, 93285), (270, 78774), (285, 74628), (324, 65645), (342, 62190), (380, 55971), (405, 52516), (513, 41460), (540, 39387), (570, 37314), (684, 31095), (691, 30780), (810, 26258), (855, 24876), (1026, 20730), (1140, 18657), (1382, 15390), (1539, 13820), (1620, 13129), (1710, 12438), (2052, 10365), (2073, 10260), (2565, 8292), (2764, 7695), (3078, 6910), (3420, 6219), (3455, 6156), (4146, 5130)]