21100380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7177}}^1$

素因数の和:7203

約数の個数: 72

約数和(自身を含む): 68736528

約数和(自身を除く): 47636148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7177, 14354, 21531, 28708, 35885, 43062, 50239, 71770, 86124, 100478, 107655, 143540, 150717, 200956, 215310, 251195, 301434, 351673, 430620, 502390, 602868, 703346, 753585, 1004780, 1055019, 1406692, 1507170, 1758365, 2110038, 3014340, 3516730, 4220076, 5275095, 7033460, 10550190, 21100380]

約数ペア:

[(1, 21100380), (2, 10550190), (3, 7033460), (4, 5275095), (5, 4220076), (6, 3516730), (7, 3014340), (10, 2110038), (12, 1758365), (14, 1507170), (15, 1406692), (20, 1055019), (21, 1004780), (28, 753585), (30, 703346), (35, 602868), (42, 502390), (49, 430620), (60, 351673), (70, 301434), (84, 251195), (98, 215310), (105, 200956), (140, 150717), (147, 143540), (196, 107655), (210, 100478), (245, 86124), (294, 71770), (420, 50239), (490, 43062), (588, 35885), (735, 28708), (980, 21531), (1470, 14354), (2940, 7177)]