640024080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{20357}}^1$

素因数の和:20504

約数の個数: 80

約数和(自身を含む): 1999318464

約数和(自身を除く): 1359294384

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 262, 393, 524, 655, 786, 1048, 1310, 1572, 1965, 2096, 2620, 3144, 3930, 5240, 6288, 7860, 10480, 15720, 20357, 31440, 40714, 61071, 81428, 101785, 122142, 162856, 203570, 244284, 305355, 325712, 407140, 488568, 610710, 814280, 977136, 1221420, 1628560, 2442840, 2666767, 4885680, 5333534, 8000301, 10667068, 13333835, 16000602, 21334136, 26667670, 32001204, 40001505, 42668272, 53335340, 64002408, 80003010, 106670680, 128004816, 160006020, 213341360, 320012040, 640024080]

約数ペア:

[(1, 640024080), (2, 320012040), (3, 213341360), (4, 160006020), (5, 128004816), (6, 106670680), (8, 80003010), (10, 64002408), (12, 53335340), (15, 42668272), (16, 40001505), (20, 32001204), (24, 26667670), (30, 21334136), (40, 16000602), (48, 13333835), (60, 10667068), (80, 8000301), (120, 5333534), (131, 4885680), (240, 2666767), (262, 2442840), (393, 1628560), (524, 1221420), (655, 977136), (786, 814280), (1048, 610710), (1310, 488568), (1572, 407140), (1965, 325712), (2096, 305355), (2620, 244284), (3144, 203570), (3930, 162856), (5240, 122142), (6288, 101785), (7860, 81428), (10480, 61071), (15720, 40714), (20357, 31440)]