19475460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{421}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 59446296

約数和(自身を除く): 39970836

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 421, 514, 771, 842, 1028, 1263, 1285, 1542, 1684, 2105, 2313, 2526, 2570, 3084, 3789, 3855, 4210, 4626, 5052, 5140, 6315, 7578, 7710, 8420, 9252, 11565, 12630, 15156, 15420, 18945, 23130, 25260, 37890, 46260, 75780, 108197, 216394, 324591, 432788, 540985, 649182, 973773, 1081970, 1298364, 1622955, 1947546, 2163940, 3245910, 3895092, 4868865, 6491820, 9737730, 19475460]

約数ペア:

[(1, 19475460), (2, 9737730), (3, 6491820), (4, 4868865), (5, 3895092), (6, 3245910), (9, 2163940), (10, 1947546), (12, 1622955), (15, 1298364), (18, 1081970), (20, 973773), (30, 649182), (36, 540985), (45, 432788), (60, 324591), (90, 216394), (180, 108197), (257, 75780), (421, 46260), (514, 37890), (771, 25260), (842, 23130), (1028, 18945), (1263, 15420), (1285, 15156), (1542, 12630), (1684, 11565), (2105, 9252), (2313, 8420), (2526, 7710), (2570, 7578), (3084, 6315), (3789, 5140), (3855, 5052), (4210, 4626)]