19913880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:329

約数の個数: 128

約数和(自身を含む): 69166080

約数和(自身を除く): 49252200

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, 84, 105, 120, 140, 151, 157, 168, 210, 280, 302, 314, 420, 453, 471, 604, 628, 755, 785, 840, 906, 942, 1057, 1099, 1208, 1256, 1510, 1570, 1812, 1884, 2114, 2198, 2265, 2355, 3020, 3140, 3171, 3297, 3624, 3768, 4228, 4396, 4530, 4710, 5285, 5495, 6040, 6280, 6342, 6594, 8456, 8792, 9060, 9420, 10570, 10990, 12684, 13188, 15855, 16485, 18120, 18840, 21140, 21980, 23707, 25368, 26376, 31710, 32970, 42280, 43960, 47414, 63420, 65940, 71121, 94828, 118535, 126840, 131880, 142242, 165949, 189656, 237070, 284484, 331898, 355605, 474140, 497847, 568968, 663796, 711210, 829745, 948280, 995694, 1327592, 1422420, 1659490, 1991388, 2489235, 2844840, 3318980, 3982776, 4978470, 6637960, 9956940, 19913880]

約数ペア:

[(1, 19913880), (2, 9956940), (3, 6637960), (4, 4978470), (5, 3982776), (6, 3318980), (7, 2844840), (8, 2489235), (10, 1991388), (12, 1659490), (14, 1422420), (15, 1327592), (20, 995694), (21, 948280), (24, 829745), (28, 711210), (30, 663796), (35, 568968), (40, 497847), (42, 474140), (56, 355605), (60, 331898), (70, 284484), (84, 237070), (105, 189656), (120, 165949), (140, 142242), (151, 131880), (157, 126840), (168, 118535), (210, 94828), (280, 71121), (302, 65940), (314, 63420), (420, 47414), (453, 43960), (471, 42280), (604, 32970), (628, 31710), (755, 26376), (785, 25368), (840, 23707), (906, 21980), (942, 21140), (1057, 18840), (1099, 18120), (1208, 16485), (1256, 15855), (1510, 13188), (1570, 12684), (1812, 10990), (1884, 10570), (2114, 9420), (2198, 9060), (2265, 8792), (2355, 8456), (3020, 6594), (3140, 6342), (3171, 6280), (3297, 6040), (3624, 5495), (3768, 5285), (4228, 4710), (4396, 4530)]