21179600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4073}}^1$

素因数の和:4104

約数の個数: 60

約数和(自身を含む): 54811596

約数和(自身を除く): 33631996

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 4073, 5200, 8146, 16292, 20365, 32584, 40730, 52949, 65168, 81460, 101825, 105898, 162920, 203650, 211796, 264745, 325840, 407300, 423592, 529490, 814600, 847184, 1058980, 1323725, 1629200, 2117960, 2647450, 4235920, 5294900, 10589800, 21179600]

約数ペア:

[(1, 21179600), (2, 10589800), (4, 5294900), (5, 4235920), (8, 2647450), (10, 2117960), (13, 1629200), (16, 1323725), (20, 1058980), (25, 847184), (26, 814600), (40, 529490), (50, 423592), (52, 407300), (65, 325840), (80, 264745), (100, 211796), (104, 203650), (130, 162920), (200, 105898), (208, 101825), (260, 81460), (325, 65168), (400, 52949), (520, 40730), (650, 32584), (1040, 20365), (1300, 16292), (2600, 8146), (4073, 5200)]