638443260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{38977}}^1$

素因数の和:39012

約数の個数: 144

約数和(自身を含む): 2383582656

約数和(自身を除く): 1745139396

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 16380, 38977, 77954, 116931, 155908, 194885, 233862, 272839, 350793, 389770, 467724, 506701, 545678, 584655, 701586, 779540, 818517, 1013402, 1091356, 1169310, 1364195, 1403172, 1520103, 1637034, 1753965, 2026804, 2338620, 2455551, 2533505, 2728390, 3040206, 3274068, 3507930, 3546907, 4092585, 4560309, 4911102, 5067010, 5456780, 6080412, 7015860, 7093814, 7600515, 8185170, 9120618, 9822204, 10134020, 10640721, 12277755, 14187628, 15201030, 16370340, 17734535, 18241236, 21281442, 22801545, 24555510, 30402060, 31922163, 35469070, 42562884, 45603090, 49111020, 53203605, 63844326, 70938140, 91206180, 106407210, 127688652, 159610815, 212814420, 319221630, 638443260]

約数ペア:

[(1, 638443260), (2, 319221630), (3, 212814420), (4, 159610815), (5, 127688652), (6, 106407210), (7, 91206180), (9, 70938140), (10, 63844326), (12, 53203605), (13, 49111020), (14, 45603090), (15, 42562884), (18, 35469070), (20, 31922163), (21, 30402060), (26, 24555510), (28, 22801545), (30, 21281442), (35, 18241236), (36, 17734535), (39, 16370340), (42, 15201030), (45, 14187628), (52, 12277755), (60, 10640721), (63, 10134020), (65, 9822204), (70, 9120618), (78, 8185170), (84, 7600515), (90, 7093814), (91, 7015860), (105, 6080412), (117, 5456780), (126, 5067010), (130, 4911102), (140, 4560309), (156, 4092585), (180, 3546907), (182, 3507930), (195, 3274068), (210, 3040206), (234, 2728390), (252, 2533505), (260, 2455551), (273, 2338620), (315, 2026804), (364, 1753965), (390, 1637034), (420, 1520103), (455, 1403172), (468, 1364195), (546, 1169310), (585, 1091356), (630, 1013402), (780, 818517), (819, 779540), (910, 701586), (1092, 584655), (1170, 545678), (1260, 506701), (1365, 467724), (1638, 389770), (1820, 350793), (2340, 272839), (2730, 233862), (3276, 194885), (4095, 155908), (5460, 116931), (8190, 77954), (16380, 38977)]