638698900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:554

約数の個数: 144

約数和(自身を含む): 1664893440

約数和(自身を除く): 1026194540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 73, 100, 116, 140, 145, 146, 175, 203, 290, 292, 350, 365, 406, 431, 511, 580, 700, 725, 730, 812, 862, 1015, 1022, 1450, 1460, 1724, 1825, 2030, 2044, 2117, 2155, 2555, 2900, 3017, 3650, 4060, 4234, 4310, 5075, 5110, 6034, 7300, 8468, 8620, 10150, 10220, 10585, 10775, 12068, 12499, 12775, 14819, 15085, 20300, 21170, 21550, 24998, 25550, 29638, 30170, 31463, 42340, 43100, 49996, 51100, 52925, 59276, 60340, 62495, 62926, 74095, 75425, 87493, 105850, 124990, 125852, 148190, 150850, 157315, 174986, 211700, 220241, 249980, 296380, 301700, 312475, 314630, 349972, 370475, 437465, 440482, 624950, 629260, 740950, 786575, 874930, 880964, 912427, 1101205, 1249900, 1481900, 1573150, 1749860, 1824854, 2187325, 2202410, 3146300, 3649708, 4374650, 4404820, 4562135, 5506025, 6386989, 8749300, 9124270, 11012050, 12773978, 18248540, 22024100, 22810675, 25547956, 31934945, 45621350, 63869890, 91242700, 127739780, 159674725, 319349450, 638698900]

約数ペア:

[(1, 638698900), (2, 319349450), (4, 159674725), (5, 127739780), (7, 91242700), (10, 63869890), (14, 45621350), (20, 31934945), (25, 25547956), (28, 22810675), (29, 22024100), (35, 18248540), (50, 12773978), (58, 11012050), (70, 9124270), (73, 8749300), (100, 6386989), (116, 5506025), (140, 4562135), (145, 4404820), (146, 4374650), (175, 3649708), (203, 3146300), (290, 2202410), (292, 2187325), (350, 1824854), (365, 1749860), (406, 1573150), (431, 1481900), (511, 1249900), (580, 1101205), (700, 912427), (725, 880964), (730, 874930), (812, 786575), (862, 740950), (1015, 629260), (1022, 624950), (1450, 440482), (1460, 437465), (1724, 370475), (1825, 349972), (2030, 314630), (2044, 312475), (2117, 301700), (2155, 296380), (2555, 249980), (2900, 220241), (3017, 211700), (3650, 174986), (4060, 157315), (4234, 150850), (4310, 148190), (5075, 125852), (5110, 124990), (6034, 105850), (7300, 87493), (8468, 75425), (8620, 74095), (10150, 62926), (10220, 62495), (10585, 60340), (10775, 59276), (12068, 52925), (12499, 51100), (12775, 49996), (14819, 43100), (15085, 42340), (20300, 31463), (21170, 30170), (21550, 29638), (24998, 25550)]