399622240

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{113}}^1$

素因数の和:213

約数の個数: 144

約数和(自身を含む): 1026968544

約数和(自身を除く): 627346304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 80, 92, 113, 115, 124, 155, 160, 184, 226, 230, 248, 310, 368, 452, 460, 496, 565, 620, 713, 736, 904, 920, 961, 992, 1130, 1240, 1426, 1808, 1840, 1922, 2260, 2480, 2599, 2852, 3503, 3565, 3616, 3680, 3844, 4520, 4805, 4960, 5198, 5704, 7006, 7130, 7688, 9040, 9610, 10396, 11408, 12995, 14012, 14260, 15376, 17515, 18080, 19220, 20792, 22103, 22816, 25990, 28024, 28520, 30752, 35030, 38440, 41584, 44206, 51980, 56048, 57040, 70060, 76880, 80569, 83168, 88412, 103960, 108593, 110515, 112096, 114080, 140120, 153760, 161138, 176824, 207920, 217186, 221030, 280240, 322276, 353648, 402845, 415840, 434372, 442060, 542965, 560480, 644552, 707296, 805690, 868744, 884120, 1085930, 1289104, 1611380, 1737488, 1768240, 2171860, 2497639, 2578208, 3222760, 3474976, 3536480, 4343720, 4995278, 6445520, 8687440, 9990556, 12488195, 12891040, 17374880, 19981112, 24976390, 39962224, 49952780, 79924448, 99905560, 199811120, 399622240]

約数ペア:

[(1, 399622240), (2, 199811120), (4, 99905560), (5, 79924448), (8, 49952780), (10, 39962224), (16, 24976390), (20, 19981112), (23, 17374880), (31, 12891040), (32, 12488195), (40, 9990556), (46, 8687440), (62, 6445520), (80, 4995278), (92, 4343720), (113, 3536480), (115, 3474976), (124, 3222760), (155, 2578208), (160, 2497639), (184, 2171860), (226, 1768240), (230, 1737488), (248, 1611380), (310, 1289104), (368, 1085930), (452, 884120), (460, 868744), (496, 805690), (565, 707296), (620, 644552), (713, 560480), (736, 542965), (904, 442060), (920, 434372), (961, 415840), (992, 402845), (1130, 353648), (1240, 322276), (1426, 280240), (1808, 221030), (1840, 217186), (1922, 207920), (2260, 176824), (2480, 161138), (2599, 153760), (2852, 140120), (3503, 114080), (3565, 112096), (3616, 110515), (3680, 108593), (3844, 103960), (4520, 88412), (4805, 83168), (4960, 80569), (5198, 76880), (5704, 70060), (7006, 57040), (7130, 56048), (7688, 51980), (9040, 44206), (9610, 41584), (10396, 38440), (11408, 35030), (12995, 30752), (14012, 28520), (14260, 28024), (15376, 25990), (17515, 22816), (18080, 22103), (19220, 20792)]