19978920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1423}}^1$

素因数の和:1456

約数の個数: 128

約数和(自身を含む): 71769600

約数和(自身を除く): 51790680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1423, 1560, 1755, 2340, 2808, 2846, 3510, 4269, 4680, 5692, 7020, 7115, 8538, 11384, 12807, 14040, 14230, 17076, 18499, 21345, 25614, 28460, 34152, 36998, 38421, 42690, 51228, 55497, 56920, 64035, 73996, 76842, 85380, 92495, 102456, 110994, 128070, 147992, 153684, 166491, 170760, 184990, 192105, 221988, 256140, 277485, 307368, 332982, 369980, 384210, 443976, 499473, 512280, 554970, 665964, 739960, 768420, 832455, 998946, 1109940, 1331928, 1536840, 1664910, 1997892, 2219880, 2497365, 3329820, 3995784, 4994730, 6659640, 9989460, 19978920]

約数ペア:

[(1, 19978920), (2, 9989460), (3, 6659640), (4, 4994730), (5, 3995784), (6, 3329820), (8, 2497365), (9, 2219880), (10, 1997892), (12, 1664910), (13, 1536840), (15, 1331928), (18, 1109940), (20, 998946), (24, 832455), (26, 768420), (27, 739960), (30, 665964), (36, 554970), (39, 512280), (40, 499473), (45, 443976), (52, 384210), (54, 369980), (60, 332982), (65, 307368), (72, 277485), (78, 256140), (90, 221988), (104, 192105), (108, 184990), (117, 170760), (120, 166491), (130, 153684), (135, 147992), (156, 128070), (180, 110994), (195, 102456), (216, 92495), (234, 85380), (260, 76842), (270, 73996), (312, 64035), (351, 56920), (360, 55497), (390, 51228), (468, 42690), (520, 38421), (540, 36998), (585, 34152), (702, 28460), (780, 25614), (936, 21345), (1080, 18499), (1170, 17076), (1404, 14230), (1423, 14040), (1560, 12807), (1755, 11384), (2340, 8538), (2808, 7115), (2846, 7020), (3510, 5692), (4269, 4680)]