201720780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{521}}^1$

素因数の和:781

約数の個数: 120

約数和(自身を含む): 636672960

約数和(自身を除く): 434952180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 239, 270, 324, 405, 478, 521, 540, 717, 810, 956, 1042, 1195, 1434, 1563, 1620, 2084, 2151, 2390, 2605, 2868, 3126, 3585, 4302, 4689, 4780, 5210, 6252, 6453, 7170, 7815, 8604, 9378, 10420, 10755, 12906, 14067, 14340, 15630, 18756, 19359, 21510, 23445, 25812, 28134, 31260, 32265, 38718, 42201, 43020, 46890, 56268, 64530, 70335, 77436, 84402, 93780, 96795, 124519, 129060, 140670, 168804, 193590, 211005, 249038, 281340, 373557, 387180, 422010, 498076, 622595, 747114, 844020, 1120671, 1245190, 1494228, 1867785, 2241342, 2490380, 3362013, 3735570, 4482684, 5603355, 6724026, 7471140, 10086039, 11206710, 13448052, 16810065, 20172078, 22413420, 33620130, 40344156, 50430195, 67240260, 100860390, 201720780]

約数ペア:

[(1, 201720780), (2, 100860390), (3, 67240260), (4, 50430195), (5, 40344156), (6, 33620130), (9, 22413420), (10, 20172078), (12, 16810065), (15, 13448052), (18, 11206710), (20, 10086039), (27, 7471140), (30, 6724026), (36, 5603355), (45, 4482684), (54, 3735570), (60, 3362013), (81, 2490380), (90, 2241342), (108, 1867785), (135, 1494228), (162, 1245190), (180, 1120671), (239, 844020), (270, 747114), (324, 622595), (405, 498076), (478, 422010), (521, 387180), (540, 373557), (717, 281340), (810, 249038), (956, 211005), (1042, 193590), (1195, 168804), (1434, 140670), (1563, 129060), (1620, 124519), (2084, 96795), (2151, 93780), (2390, 84402), (2605, 77436), (2868, 70335), (3126, 64530), (3585, 56268), (4302, 46890), (4689, 43020), (4780, 42201), (5210, 38718), (6252, 32265), (6453, 31260), (7170, 28134), (7815, 25812), (8604, 23445), (9378, 21510), (10420, 19359), (10755, 18756), (12906, 15630), (14067, 14340)]