205971440

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 120

約数和(自身を含む): 520050048

約数和(自身を除く): 314078608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 157, 184, 230, 248, 310, 314, 368, 460, 496, 529, 620, 628, 713, 785, 920, 1058, 1240, 1256, 1426, 1570, 1840, 2116, 2480, 2512, 2645, 2852, 3140, 3565, 3611, 4232, 4867, 5290, 5704, 6280, 7130, 7222, 8464, 9734, 10580, 11408, 12560, 14260, 14444, 16399, 18055, 19468, 21160, 24335, 28520, 28888, 32798, 36110, 38936, 42320, 48670, 57040, 57776, 65596, 72220, 77872, 81995, 83053, 97340, 111941, 131192, 144440, 163990, 166106, 194680, 223882, 262384, 288880, 327980, 332212, 389360, 415265, 447764, 559705, 655960, 664424, 830530, 895528, 1119410, 1311920, 1328848, 1661060, 1791056, 2238820, 2574643, 3322120, 4477640, 5149286, 6644240, 8955280, 10298572, 12873215, 20597144, 25746430, 41194288, 51492860, 102985720, 205971440]

約数ペア:

[(1, 205971440), (2, 102985720), (4, 51492860), (5, 41194288), (8, 25746430), (10, 20597144), (16, 12873215), (20, 10298572), (23, 8955280), (31, 6644240), (40, 5149286), (46, 4477640), (62, 3322120), (80, 2574643), (92, 2238820), (115, 1791056), (124, 1661060), (155, 1328848), (157, 1311920), (184, 1119410), (230, 895528), (248, 830530), (310, 664424), (314, 655960), (368, 559705), (460, 447764), (496, 415265), (529, 389360), (620, 332212), (628, 327980), (713, 288880), (785, 262384), (920, 223882), (1058, 194680), (1240, 166106), (1256, 163990), (1426, 144440), (1570, 131192), (1840, 111941), (2116, 97340), (2480, 83053), (2512, 81995), (2645, 77872), (2852, 72220), (3140, 65596), (3565, 57776), (3611, 57040), (4232, 48670), (4867, 42320), (5290, 38936), (5704, 36110), (6280, 32798), (7130, 28888), (7222, 28520), (8464, 24335), (9734, 21160), (10580, 19468), (11408, 18055), (12560, 16399), (14260, 14444)]