261436280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:373

約数の個数: 128

約数和(自身を含む): 696729600

約数和(自身を除く): 435293320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 79, 106, 140, 158, 212, 223, 265, 280, 316, 371, 395, 424, 446, 530, 553, 632, 742, 790, 892, 1060, 1106, 1115, 1484, 1561, 1580, 1784, 1855, 2120, 2212, 2230, 2765, 2968, 3122, 3160, 3710, 4187, 4424, 4460, 5530, 6244, 7420, 7805, 8374, 8920, 11060, 11819, 12488, 14840, 15610, 16748, 17617, 20935, 22120, 23638, 29309, 31220, 33496, 35234, 41870, 47276, 58618, 59095, 62440, 70468, 82733, 83740, 88085, 94552, 117236, 118190, 123319, 140936, 146545, 165466, 167480, 176170, 234472, 236380, 246638, 293090, 330932, 352340, 413665, 472760, 493276, 586180, 616595, 661864, 704680, 827330, 933701, 986552, 1172360, 1233190, 1654660, 1867402, 2466380, 3309320, 3734804, 4668505, 4932760, 6535907, 7469608, 9337010, 13071814, 18674020, 26143628, 32679535, 37348040, 52287256, 65359070, 130718140, 261436280]

約数ペア:

[(1, 261436280), (2, 130718140), (4, 65359070), (5, 52287256), (7, 37348040), (8, 32679535), (10, 26143628), (14, 18674020), (20, 13071814), (28, 9337010), (35, 7469608), (40, 6535907), (53, 4932760), (56, 4668505), (70, 3734804), (79, 3309320), (106, 2466380), (140, 1867402), (158, 1654660), (212, 1233190), (223, 1172360), (265, 986552), (280, 933701), (316, 827330), (371, 704680), (395, 661864), (424, 616595), (446, 586180), (530, 493276), (553, 472760), (632, 413665), (742, 352340), (790, 330932), (892, 293090), (1060, 246638), (1106, 236380), (1115, 234472), (1484, 176170), (1561, 167480), (1580, 165466), (1784, 146545), (1855, 140936), (2120, 123319), (2212, 118190), (2230, 117236), (2765, 94552), (2968, 88085), (3122, 83740), (3160, 82733), (3710, 70468), (4187, 62440), (4424, 59095), (4460, 58618), (5530, 47276), (6244, 41870), (7420, 35234), (7805, 33496), (8374, 31220), (8920, 29309), (11060, 23638), (11819, 22120), (12488, 20935), (14840, 17617), (15610, 16748)]