18816420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{631}}^1$

素因数の和:721

約数の個数: 96

約数和(自身を含む): 61157376

約数和(自身を除く): 42340956

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 71, 84, 105, 140, 142, 210, 213, 284, 355, 420, 426, 497, 631, 710, 852, 994, 1065, 1262, 1420, 1491, 1893, 1988, 2130, 2485, 2524, 2982, 3155, 3786, 4260, 4417, 4970, 5964, 6310, 7455, 7572, 8834, 9465, 9940, 12620, 13251, 14910, 17668, 18930, 22085, 26502, 29820, 37860, 44170, 44801, 53004, 66255, 88340, 89602, 132510, 134403, 179204, 224005, 265020, 268806, 313607, 448010, 537612, 627214, 672015, 896020, 940821, 1254428, 1344030, 1568035, 1881642, 2688060, 3136070, 3763284, 4704105, 6272140, 9408210, 18816420]

約数ペア:

[(1, 18816420), (2, 9408210), (3, 6272140), (4, 4704105), (5, 3763284), (6, 3136070), (7, 2688060), (10, 1881642), (12, 1568035), (14, 1344030), (15, 1254428), (20, 940821), (21, 896020), (28, 672015), (30, 627214), (35, 537612), (42, 448010), (60, 313607), (70, 268806), (71, 265020), (84, 224005), (105, 179204), (140, 134403), (142, 132510), (210, 89602), (213, 88340), (284, 66255), (355, 53004), (420, 44801), (426, 44170), (497, 37860), (631, 29820), (710, 26502), (852, 22085), (994, 18930), (1065, 17668), (1262, 14910), (1420, 13251), (1491, 12620), (1893, 9940), (1988, 9465), (2130, 8834), (2485, 7572), (2524, 7455), (2982, 6310), (3155, 5964), (3786, 4970), (4260, 4417)]