18991440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2029}}^1$

素因数の和:2061

約数の個数: 120

約数和(自身を含む): 68719560

約数和(自身を除く): 49728120

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, 2029, 2340, 3120, 4058, 4680, 6087, 8116, 9360, 10145, 12174, 16232, 18261, 20290, 24348, 26377, 30435, 32464, 36522, 40580, 48696, 52754, 60870, 73044, 79131, 81160, 91305, 97392, 105508, 121740, 131885, 146088, 158262, 162320, 182610, 211016, 237393, 243480, 263770, 292176, 316524, 365220, 395655, 422032, 474786, 486960, 527540, 633048, 730440, 791310, 949572, 1055080, 1186965, 1266096, 1460880, 1582620, 1899144, 2110160, 2373930, 3165240, 3798288, 4747860, 6330480, 9495720, 18991440]

約数ペア:

[(1, 18991440), (2, 9495720), (3, 6330480), (4, 4747860), (5, 3798288), (6, 3165240), (8, 2373930), (9, 2110160), (10, 1899144), (12, 1582620), (13, 1460880), (15, 1266096), (16, 1186965), (18, 1055080), (20, 949572), (24, 791310), (26, 730440), (30, 633048), (36, 527540), (39, 486960), (40, 474786), (45, 422032), (48, 395655), (52, 365220), (60, 316524), (65, 292176), (72, 263770), (78, 243480), (80, 237393), (90, 211016), (104, 182610), (117, 162320), (120, 158262), (130, 146088), (144, 131885), (156, 121740), (180, 105508), (195, 97392), (208, 91305), (234, 81160), (240, 79131), (260, 73044), (312, 60870), (360, 52754), (390, 48696), (468, 40580), (520, 36522), (585, 32464), (624, 30435), (720, 26377), (780, 24348), (936, 20290), (1040, 18261), (1170, 16232), (1560, 12174), (1872, 10145), (2029, 9360), (2340, 8116), (3120, 6087), (4058, 4680)]