390717520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:297

約数の個数: 120

約数和(自身を含む): 976250016

約数和(自身を除く): 585532496

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 83, 95, 152, 163, 166, 190, 304, 326, 332, 361, 380, 415, 652, 664, 722, 760, 815, 830, 1304, 1328, 1444, 1520, 1577, 1630, 1660, 1805, 2608, 2888, 3097, 3154, 3260, 3320, 3610, 5776, 6194, 6308, 6520, 6640, 7220, 7885, 12388, 12616, 13040, 13529, 14440, 15485, 15770, 24776, 25232, 27058, 28880, 29963, 30970, 31540, 49552, 54116, 58843, 59926, 61940, 63080, 67645, 108232, 117686, 119852, 123880, 126160, 135290, 149815, 216464, 235372, 239704, 247760, 257051, 270580, 294215, 299630, 470744, 479408, 514102, 541160, 588430, 599260, 941488, 1028204, 1082320, 1176860, 1198520, 1285255, 2056408, 2353720, 2397040, 2570510, 4112816, 4707440, 4883969, 5141020, 9767938, 10282040, 19535876, 20564080, 24419845, 39071752, 48839690, 78143504, 97679380, 195358760, 390717520]

約数ペア:

[(1, 390717520), (2, 195358760), (4, 97679380), (5, 78143504), (8, 48839690), (10, 39071752), (16, 24419845), (19, 20564080), (20, 19535876), (38, 10282040), (40, 9767938), (76, 5141020), (80, 4883969), (83, 4707440), (95, 4112816), (152, 2570510), (163, 2397040), (166, 2353720), (190, 2056408), (304, 1285255), (326, 1198520), (332, 1176860), (361, 1082320), (380, 1028204), (415, 941488), (652, 599260), (664, 588430), (722, 541160), (760, 514102), (815, 479408), (830, 470744), (1304, 299630), (1328, 294215), (1444, 270580), (1520, 257051), (1577, 247760), (1630, 239704), (1660, 235372), (1805, 216464), (2608, 149815), (2888, 135290), (3097, 126160), (3154, 123880), (3260, 119852), (3320, 117686), (3610, 108232), (5776, 67645), (6194, 63080), (6308, 61940), (6520, 59926), (6640, 58843), (7220, 54116), (7885, 49552), (12388, 31540), (12616, 30970), (13040, 29963), (13529, 28880), (14440, 27058), (15485, 25232), (15770, 24776)]