20687550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^2$

素因数の和:234

約数の個数: 72

約数和(自身を含む): 55793304

約数和(自身を除く): 35105754

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 103, 130, 150, 195, 206, 309, 325, 390, 515, 618, 650, 975, 1030, 1339, 1545, 1950, 2575, 2678, 3090, 4017, 5150, 6695, 7725, 8034, 10609, 13390, 15450, 20085, 21218, 31827, 33475, 40170, 53045, 63654, 66950, 100425, 106090, 137917, 159135, 200850, 265225, 275834, 318270, 413751, 530450, 689585, 795675, 827502, 1379170, 1591350, 2068755, 3447925, 4137510, 6895850, 10343775, 20687550]

約数ペア:

[(1, 20687550), (2, 10343775), (3, 6895850), (5, 4137510), (6, 3447925), (10, 2068755), (13, 1591350), (15, 1379170), (25, 827502), (26, 795675), (30, 689585), (39, 530450), (50, 413751), (65, 318270), (75, 275834), (78, 265225), (103, 200850), (130, 159135), (150, 137917), (195, 106090), (206, 100425), (309, 66950), (325, 63654), (390, 53045), (515, 40170), (618, 33475), (650, 31827), (975, 21218), (1030, 20085), (1339, 15450), (1545, 13390), (1950, 10609), (2575, 8034), (2678, 7725), (3090, 6695), (4017, 5150)]