1239235540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:665

約数の個数: 96

約数和(自身を含む): 2803046400

約数和(自身を除く): 1563810860

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 157, 290, 310, 314, 439, 580, 620, 628, 785, 878, 899, 1570, 1756, 1798, 2195, 3140, 3596, 4390, 4495, 4553, 4867, 8780, 8990, 9106, 9734, 12731, 13609, 17980, 18212, 19468, 22765, 24335, 25462, 27218, 45530, 48670, 50924, 54436, 63655, 68045, 68923, 91060, 97340, 127310, 136090, 137846, 141143, 254620, 272180, 275692, 282286, 344615, 394661, 564572, 689230, 705715, 789322, 1378460, 1411430, 1578644, 1973305, 1998767, 2136613, 2822860, 3946610, 3997534, 4273226, 7893220, 7995068, 8546452, 9993835, 10683065, 19987670, 21366130, 39975340, 42732260, 61961777, 123923554, 247847108, 309808885, 619617770, 1239235540]

約数ペア:

[(1, 1239235540), (2, 619617770), (4, 309808885), (5, 247847108), (10, 123923554), (20, 61961777), (29, 42732260), (31, 39975340), (58, 21366130), (62, 19987670), (116, 10683065), (124, 9993835), (145, 8546452), (155, 7995068), (157, 7893220), (290, 4273226), (310, 3997534), (314, 3946610), (439, 2822860), (580, 2136613), (620, 1998767), (628, 1973305), (785, 1578644), (878, 1411430), (899, 1378460), (1570, 789322), (1756, 705715), (1798, 689230), (2195, 564572), (3140, 394661), (3596, 344615), (4390, 282286), (4495, 275692), (4553, 272180), (4867, 254620), (8780, 141143), (8990, 137846), (9106, 136090), (9734, 127310), (12731, 97340), (13609, 91060), (17980, 68923), (18212, 68045), (19468, 63655), (22765, 54436), (24335, 50924), (25462, 48670), (27218, 45530)]