20389860

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{619}}^1$

素因数の和:698

約数の個数: 96

約数和(自身を含む): 64579200

約数和(自身を除く): 44189340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 90, 108, 122, 135, 180, 183, 244, 270, 305, 366, 540, 549, 610, 619, 732, 915, 1098, 1220, 1238, 1647, 1830, 1857, 2196, 2476, 2745, 3095, 3294, 3660, 3714, 5490, 5571, 6190, 6588, 7428, 8235, 9285, 10980, 11142, 12380, 16470, 16713, 18570, 22284, 27855, 32940, 33426, 37140, 37759, 55710, 66852, 75518, 83565, 111420, 113277, 151036, 167130, 188795, 226554, 334260, 339831, 377590, 453108, 566385, 679662, 755180, 1019493, 1132770, 1359324, 1699155, 2038986, 2265540, 3398310, 4077972, 5097465, 6796620, 10194930, 20389860]

約数ペア:

[(1, 20389860), (2, 10194930), (3, 6796620), (4, 5097465), (5, 4077972), (6, 3398310), (9, 2265540), (10, 2038986), (12, 1699155), (15, 1359324), (18, 1132770), (20, 1019493), (27, 755180), (30, 679662), (36, 566385), (45, 453108), (54, 377590), (60, 339831), (61, 334260), (90, 226554), (108, 188795), (122, 167130), (135, 151036), (180, 113277), (183, 111420), (244, 83565), (270, 75518), (305, 66852), (366, 55710), (540, 37759), (549, 37140), (610, 33426), (619, 32940), (732, 27855), (915, 22284), (1098, 18570), (1220, 16713), (1238, 16470), (1647, 12380), (1830, 11142), (1857, 10980), (2196, 9285), (2476, 8235), (2745, 7428), (3095, 6588), (3294, 6190), (3660, 5571), (3714, 5490)]