25815720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:515

約数の個数: 128

約数和(自身を含む): 89936640

約数和(自身を除く): 64120920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 73, 84, 105, 120, 140, 146, 168, 210, 219, 280, 292, 365, 420, 421, 438, 511, 584, 730, 840, 842, 876, 1022, 1095, 1263, 1460, 1533, 1684, 1752, 2044, 2105, 2190, 2526, 2555, 2920, 2947, 3066, 3368, 4088, 4210, 4380, 5052, 5110, 5894, 6132, 6315, 7665, 8420, 8760, 8841, 10104, 10220, 11788, 12264, 12630, 14735, 15330, 16840, 17682, 20440, 23576, 25260, 29470, 30660, 30733, 35364, 44205, 50520, 58940, 61320, 61466, 70728, 88410, 92199, 117880, 122932, 153665, 176820, 184398, 215131, 245864, 307330, 353640, 368796, 430262, 460995, 614660, 645393, 737592, 860524, 921990, 1075655, 1229320, 1290786, 1721048, 1843980, 2151310, 2581572, 3226965, 3687960, 4302620, 5163144, 6453930, 8605240, 12907860, 25815720]

約数ペア:

[(1, 25815720), (2, 12907860), (3, 8605240), (4, 6453930), (5, 5163144), (6, 4302620), (7, 3687960), (8, 3226965), (10, 2581572), (12, 2151310), (14, 1843980), (15, 1721048), (20, 1290786), (21, 1229320), (24, 1075655), (28, 921990), (30, 860524), (35, 737592), (40, 645393), (42, 614660), (56, 460995), (60, 430262), (70, 368796), (73, 353640), (84, 307330), (105, 245864), (120, 215131), (140, 184398), (146, 176820), (168, 153665), (210, 122932), (219, 117880), (280, 92199), (292, 88410), (365, 70728), (420, 61466), (421, 61320), (438, 58940), (511, 50520), (584, 44205), (730, 35364), (840, 30733), (842, 30660), (876, 29470), (1022, 25260), (1095, 23576), (1263, 20440), (1460, 17682), (1533, 16840), (1684, 15330), (1752, 14735), (2044, 12630), (2105, 12264), (2190, 11788), (2526, 10220), (2555, 10104), (2920, 8841), (2947, 8760), (3066, 8420), (3368, 7665), (4088, 6315), (4210, 6132), (4380, 5894), (5052, 5110)]