251222140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:563

約数の個数: 96

約数和(自身を含む): 596090880

約数和(自身を除く): 344868740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 71, 124, 130, 142, 155, 260, 284, 310, 355, 403, 439, 620, 710, 806, 878, 923, 1420, 1612, 1756, 1846, 2015, 2195, 2201, 3692, 4030, 4390, 4402, 4615, 5707, 8060, 8780, 8804, 9230, 11005, 11414, 13609, 18460, 22010, 22828, 27218, 28535, 28613, 31169, 44020, 54436, 57070, 57226, 62338, 68045, 114140, 114452, 124676, 136090, 143065, 155845, 176917, 272180, 286130, 311690, 353834, 405197, 572260, 623380, 707668, 810394, 884585, 966239, 1620788, 1769170, 1932478, 2025985, 3538340, 3864956, 4051970, 4831195, 8103940, 9662390, 12561107, 19324780, 25122214, 50244428, 62805535, 125611070, 251222140]

約数ペア:

[(1, 251222140), (2, 125611070), (4, 62805535), (5, 50244428), (10, 25122214), (13, 19324780), (20, 12561107), (26, 9662390), (31, 8103940), (52, 4831195), (62, 4051970), (65, 3864956), (71, 3538340), (124, 2025985), (130, 1932478), (142, 1769170), (155, 1620788), (260, 966239), (284, 884585), (310, 810394), (355, 707668), (403, 623380), (439, 572260), (620, 405197), (710, 353834), (806, 311690), (878, 286130), (923, 272180), (1420, 176917), (1612, 155845), (1756, 143065), (1846, 136090), (2015, 124676), (2195, 114452), (2201, 114140), (3692, 68045), (4030, 62338), (4390, 57226), (4402, 57070), (4615, 54436), (5707, 44020), (8060, 31169), (8780, 28613), (8804, 28535), (9230, 27218), (11005, 22828), (11414, 22010), (13609, 18460)]