28554760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:730

約数の個数: 64

約数和(自身を含む): 70081200

約数和(自身を除く): 41526440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 89, 104, 130, 178, 260, 356, 445, 520, 617, 712, 890, 1157, 1234, 1780, 2314, 2468, 3085, 3560, 4628, 4936, 5785, 6170, 8021, 9256, 11570, 12340, 16042, 23140, 24680, 32084, 40105, 46280, 54913, 64168, 80210, 109826, 160420, 219652, 274565, 320840, 439304, 549130, 713869, 1098260, 1427738, 2196520, 2855476, 3569345, 5710952, 7138690, 14277380, 28554760]

約数ペア:

[(1, 28554760), (2, 14277380), (4, 7138690), (5, 5710952), (8, 3569345), (10, 2855476), (13, 2196520), (20, 1427738), (26, 1098260), (40, 713869), (52, 549130), (65, 439304), (89, 320840), (104, 274565), (130, 219652), (178, 160420), (260, 109826), (356, 80210), (445, 64168), (520, 54913), (617, 46280), (712, 40105), (890, 32084), (1157, 24680), (1234, 23140), (1780, 16042), (2314, 12340), (2468, 11570), (3085, 9256), (3560, 8021), (4628, 6170), (4936, 5785)]