21251760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1213}}^1$

素因数の和:1302

約数の個数: 80

約数和(自身を含む): 66837984

約数和(自身を除く): 45586224

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 73, 80, 120, 146, 219, 240, 292, 365, 438, 584, 730, 876, 1095, 1168, 1213, 1460, 1752, 2190, 2426, 2920, 3504, 3639, 4380, 4852, 5840, 6065, 7278, 8760, 9704, 12130, 14556, 17520, 18195, 19408, 24260, 29112, 36390, 48520, 58224, 72780, 88549, 97040, 145560, 177098, 265647, 291120, 354196, 442745, 531294, 708392, 885490, 1062588, 1328235, 1416784, 1770980, 2125176, 2656470, 3541960, 4250352, 5312940, 7083920, 10625880, 21251760]

約数ペア:

[(1, 21251760), (2, 10625880), (3, 7083920), (4, 5312940), (5, 4250352), (6, 3541960), (8, 2656470), (10, 2125176), (12, 1770980), (15, 1416784), (16, 1328235), (20, 1062588), (24, 885490), (30, 708392), (40, 531294), (48, 442745), (60, 354196), (73, 291120), (80, 265647), (120, 177098), (146, 145560), (219, 97040), (240, 88549), (292, 72780), (365, 58224), (438, 48520), (584, 36390), (730, 29112), (876, 24260), (1095, 19408), (1168, 18195), (1213, 17520), (1460, 14556), (1752, 12130), (2190, 9704), (2426, 8760), (2920, 7278), (3504, 6065), (3639, 5840), (4380, 4852)]