645625840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:311

約数の個数: 160

約数和(自身を含む): 1645608960

約数和(自身を除く): 999983120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 40, 47, 58, 62, 80, 94, 116, 124, 145, 155, 188, 191, 232, 235, 248, 290, 310, 376, 382, 464, 470, 496, 580, 620, 752, 764, 899, 940, 955, 1160, 1240, 1363, 1457, 1528, 1798, 1880, 1910, 2320, 2480, 2726, 2914, 3056, 3596, 3760, 3820, 4495, 5452, 5539, 5828, 5921, 6815, 7192, 7285, 7640, 8977, 8990, 10904, 11078, 11656, 11842, 13630, 14384, 14570, 15280, 17954, 17980, 21808, 22156, 23312, 23684, 27260, 27695, 29140, 29605, 35908, 35960, 42253, 44312, 44885, 47368, 54520, 55390, 58280, 59210, 71816, 71920, 84506, 88624, 89770, 94736, 109040, 110780, 116560, 118420, 143632, 169012, 171709, 179540, 211265, 221560, 236840, 260333, 278287, 338024, 343418, 359080, 422530, 443120, 473680, 520666, 556574, 676048, 686836, 718160, 845060, 858545, 1041332, 1113148, 1301665, 1373672, 1391435, 1690120, 1717090, 2082664, 2226296, 2603330, 2747344, 2782870, 3380240, 3434180, 4165328, 4452592, 5206660, 5565740, 6868360, 8070323, 10413320, 11131480, 13736720, 16140646, 20826640, 22262960, 32281292, 40351615, 64562584, 80703230, 129125168, 161406460, 322812920, 645625840]

約数ペア:

[(1, 645625840), (2, 322812920), (4, 161406460), (5, 129125168), (8, 80703230), (10, 64562584), (16, 40351615), (20, 32281292), (29, 22262960), (31, 20826640), (40, 16140646), (47, 13736720), (58, 11131480), (62, 10413320), (80, 8070323), (94, 6868360), (116, 5565740), (124, 5206660), (145, 4452592), (155, 4165328), (188, 3434180), (191, 3380240), (232, 2782870), (235, 2747344), (248, 2603330), (290, 2226296), (310, 2082664), (376, 1717090), (382, 1690120), (464, 1391435), (470, 1373672), (496, 1301665), (580, 1113148), (620, 1041332), (752, 858545), (764, 845060), (899, 718160), (940, 686836), (955, 676048), (1160, 556574), (1240, 520666), (1363, 473680), (1457, 443120), (1528, 422530), (1798, 359080), (1880, 343418), (1910, 338024), (2320, 278287), (2480, 260333), (2726, 236840), (2914, 221560), (3056, 211265), (3596, 179540), (3760, 171709), (3820, 169012), (4495, 143632), (5452, 118420), (5539, 116560), (5828, 110780), (5921, 109040), (6815, 94736), (7192, 89770), (7285, 88624), (7640, 84506), (8977, 71920), (8990, 71816), (10904, 59210), (11078, 58280), (11656, 55390), (11842, 54520), (13630, 47368), (14384, 44885), (14570, 44312), (15280, 42253), (17954, 35960), (17980, 35908), (21808, 29605), (22156, 29140), (23312, 27695), (23684, 27260)]