19837520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:484

約数の個数: 80

約数和(自身を含む): 50234880

約数和(自身を除く): 30397360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 304, 310, 380, 421, 496, 589, 620, 760, 842, 1178, 1240, 1520, 1684, 2105, 2356, 2480, 2945, 3368, 4210, 4712, 5890, 6736, 7999, 8420, 9424, 11780, 13051, 15998, 16840, 23560, 26102, 31996, 33680, 39995, 47120, 52204, 63992, 65255, 79990, 104408, 127984, 130510, 159980, 208816, 247969, 261020, 319960, 495938, 522040, 639920, 991876, 1044080, 1239845, 1983752, 2479690, 3967504, 4959380, 9918760, 19837520]

約数ペア:

[(1, 19837520), (2, 9918760), (4, 4959380), (5, 3967504), (8, 2479690), (10, 1983752), (16, 1239845), (19, 1044080), (20, 991876), (31, 639920), (38, 522040), (40, 495938), (62, 319960), (76, 261020), (80, 247969), (95, 208816), (124, 159980), (152, 130510), (155, 127984), (190, 104408), (248, 79990), (304, 65255), (310, 63992), (380, 52204), (421, 47120), (496, 39995), (589, 33680), (620, 31996), (760, 26102), (842, 23560), (1178, 16840), (1240, 15998), (1520, 13051), (1684, 11780), (2105, 9424), (2356, 8420), (2480, 7999), (2945, 6736), (3368, 5890), (4210, 4712)]