30721860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1$

素因数の和:738

約数の個数: 144

約数和(自身を含む): 105792960

約数和(自身を除く): 75071100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 494, 570, 585, 684, 691, 741, 780, 855, 988, 1140, 1170, 1235, 1382, 1482, 1710, 2073, 2223, 2340, 2470, 2764, 2964, 3420, 3455, 3705, 4146, 4446, 4940, 6219, 6910, 7410, 8292, 8892, 8983, 10365, 11115, 12438, 13129, 13820, 14820, 17966, 20730, 22230, 24876, 26258, 26949, 31095, 35932, 39387, 41460, 44460, 44915, 52516, 53898, 62190, 65645, 78774, 80847, 89830, 107796, 118161, 124380, 131290, 134745, 157548, 161694, 170677, 179660, 196935, 236322, 262580, 269490, 323388, 341354, 393870, 404235, 472644, 512031, 538980, 590805, 682708, 787740, 808470, 853385, 1024062, 1181610, 1536093, 1616940, 1706770, 2048124, 2363220, 2560155, 3072186, 3413540, 5120310, 6144372, 7680465, 10240620, 15360930, 30721860]

約数ペア:

[(1, 30721860), (2, 15360930), (3, 10240620), (4, 7680465), (5, 6144372), (6, 5120310), (9, 3413540), (10, 3072186), (12, 2560155), (13, 2363220), (15, 2048124), (18, 1706770), (19, 1616940), (20, 1536093), (26, 1181610), (30, 1024062), (36, 853385), (38, 808470), (39, 787740), (45, 682708), (52, 590805), (57, 538980), (60, 512031), (65, 472644), (76, 404235), (78, 393870), (90, 341354), (95, 323388), (114, 269490), (117, 262580), (130, 236322), (156, 196935), (171, 179660), (180, 170677), (190, 161694), (195, 157548), (228, 134745), (234, 131290), (247, 124380), (260, 118161), (285, 107796), (342, 89830), (380, 80847), (390, 78774), (468, 65645), (494, 62190), (570, 53898), (585, 52516), (684, 44915), (691, 44460), (741, 41460), (780, 39387), (855, 35932), (988, 31095), (1140, 26949), (1170, 26258), (1235, 24876), (1382, 22230), (1482, 20730), (1710, 17966), (2073, 14820), (2223, 13820), (2340, 13129), (2470, 12438), (2764, 11115), (2964, 10365), (3420, 8983), (3455, 8892), (3705, 8292), (4146, 7410), (4446, 6910), (4940, 6219)]