20994480

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2243}}^1$

素因数の和:2275

約数の個数: 120

約数和(自身を含む): 75963888

約数和(自身を除く): 54969408

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2243, 2340, 3120, 4486, 4680, 6729, 8972, 9360, 11215, 13458, 17944, 20187, 22430, 26916, 29159, 33645, 35888, 40374, 44860, 53832, 58318, 67290, 80748, 87477, 89720, 100935, 107664, 116636, 134580, 145795, 161496, 174954, 179440, 201870, 233272, 262431, 269160, 291590, 322992, 349908, 403740, 437385, 466544, 524862, 538320, 583180, 699816, 807480, 874770, 1049724, 1166360, 1312155, 1399632, 1614960, 1749540, 2099448, 2332720, 2624310, 3499080, 4198896, 5248620, 6998160, 10497240, 20994480]

約数ペア:

[(1, 20994480), (2, 10497240), (3, 6998160), (4, 5248620), (5, 4198896), (6, 3499080), (8, 2624310), (9, 2332720), (10, 2099448), (12, 1749540), (13, 1614960), (15, 1399632), (16, 1312155), (18, 1166360), (20, 1049724), (24, 874770), (26, 807480), (30, 699816), (36, 583180), (39, 538320), (40, 524862), (45, 466544), (48, 437385), (52, 403740), (60, 349908), (65, 322992), (72, 291590), (78, 269160), (80, 262431), (90, 233272), (104, 201870), (117, 179440), (120, 174954), (130, 161496), (144, 145795), (156, 134580), (180, 116636), (195, 107664), (208, 100935), (234, 89720), (240, 87477), (260, 80748), (312, 67290), (360, 58318), (390, 53832), (468, 44860), (520, 40374), (585, 35888), (624, 33645), (720, 29159), (780, 26916), (936, 22430), (1040, 20187), (1170, 17944), (1560, 13458), (1872, 11215), (2243, 9360), (2340, 8972), (3120, 6729), (4486, 4680)]