331151920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:315

約数の個数: 160

約数和(自身を含む): 885657600

約数和(自身を除く): 554505680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 61, 62, 80, 88, 110, 122, 124, 155, 176, 199, 220, 244, 248, 305, 310, 341, 398, 440, 488, 496, 610, 620, 671, 682, 796, 880, 976, 995, 1220, 1240, 1342, 1364, 1592, 1705, 1891, 1990, 2189, 2440, 2480, 2684, 2728, 3184, 3355, 3410, 3782, 3980, 4378, 4880, 5368, 5456, 6169, 6710, 6820, 7564, 7960, 8756, 9455, 10736, 10945, 12139, 12338, 13420, 13640, 15128, 15920, 17512, 18910, 20801, 21890, 24278, 24676, 26840, 27280, 30256, 30845, 35024, 37820, 41602, 43780, 48556, 49352, 53680, 60695, 61690, 67859, 75640, 83204, 87560, 97112, 98704, 104005, 121390, 123380, 133529, 135718, 151280, 166408, 175120, 194224, 208010, 242780, 246760, 267058, 271436, 332816, 339295, 376309, 416020, 485560, 493520, 534116, 542872, 667645, 678590, 752618, 832040, 971120, 1068232, 1085744, 1335290, 1357180, 1505236, 1664080, 1881545, 2136464, 2670580, 2714360, 3010472, 3763090, 4139399, 5341160, 5428720, 6020944, 7526180, 8278798, 10682320, 15052360, 16557596, 20696995, 30104720, 33115192, 41393990, 66230384, 82787980, 165575960, 331151920]

約数ペア:

[(1, 331151920), (2, 165575960), (4, 82787980), (5, 66230384), (8, 41393990), (10, 33115192), (11, 30104720), (16, 20696995), (20, 16557596), (22, 15052360), (31, 10682320), (40, 8278798), (44, 7526180), (55, 6020944), (61, 5428720), (62, 5341160), (80, 4139399), (88, 3763090), (110, 3010472), (122, 2714360), (124, 2670580), (155, 2136464), (176, 1881545), (199, 1664080), (220, 1505236), (244, 1357180), (248, 1335290), (305, 1085744), (310, 1068232), (341, 971120), (398, 832040), (440, 752618), (488, 678590), (496, 667645), (610, 542872), (620, 534116), (671, 493520), (682, 485560), (796, 416020), (880, 376309), (976, 339295), (995, 332816), (1220, 271436), (1240, 267058), (1342, 246760), (1364, 242780), (1592, 208010), (1705, 194224), (1891, 175120), (1990, 166408), (2189, 151280), (2440, 135718), (2480, 133529), (2684, 123380), (2728, 121390), (3184, 104005), (3355, 98704), (3410, 97112), (3782, 87560), (3980, 83204), (4378, 75640), (4880, 67859), (5368, 61690), (5456, 60695), (6169, 53680), (6710, 49352), (6820, 48556), (7564, 43780), (7960, 41602), (8756, 37820), (9455, 35024), (10736, 30845), (10945, 30256), (12139, 27280), (12338, 26840), (13420, 24676), (13640, 24278), (15128, 21890), (15920, 20801), (17512, 18910)]