21119490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4789}}^1$

素因数の和:4816

約数の個数: 72

約数和(自身を含む): 63889020

約数和(自身を除く): 42769530

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4789, 9578, 14367, 23945, 28734, 33523, 43101, 47890, 67046, 71835, 86202, 100569, 143670, 167615, 201138, 215505, 234661, 301707, 335230, 431010, 469322, 502845, 603414, 703983, 1005690, 1173305, 1407966, 1508535, 2111949, 2346610, 3017070, 3519915, 4223898, 7039830, 10559745, 21119490]

約数ペア:

[(1, 21119490), (2, 10559745), (3, 7039830), (5, 4223898), (6, 3519915), (7, 3017070), (9, 2346610), (10, 2111949), (14, 1508535), (15, 1407966), (18, 1173305), (21, 1005690), (30, 703983), (35, 603414), (42, 502845), (45, 469322), (49, 431010), (63, 335230), (70, 301707), (90, 234661), (98, 215505), (105, 201138), (126, 167615), (147, 143670), (210, 100569), (245, 86202), (294, 71835), (315, 67046), (441, 47890), (490, 43101), (630, 33523), (735, 28734), (882, 23945), (1470, 14367), (2205, 9578), (4410, 4789)]