19981560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2281}}^1$

素因数の和:2368

約数の個数: 64

約数和(自身を含む): 60792480

約数和(自身を除く): 40810920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 73, 120, 146, 219, 292, 365, 438, 584, 730, 876, 1095, 1460, 1752, 2190, 2281, 2920, 4380, 4562, 6843, 8760, 9124, 11405, 13686, 18248, 22810, 27372, 34215, 45620, 54744, 68430, 91240, 136860, 166513, 273720, 333026, 499539, 666052, 832565, 999078, 1332104, 1665130, 1998156, 2497695, 3330260, 3996312, 4995390, 6660520, 9990780, 19981560]

約数ペア:

[(1, 19981560), (2, 9990780), (3, 6660520), (4, 4995390), (5, 3996312), (6, 3330260), (8, 2497695), (10, 1998156), (12, 1665130), (15, 1332104), (20, 999078), (24, 832565), (30, 666052), (40, 499539), (60, 333026), (73, 273720), (120, 166513), (146, 136860), (219, 91240), (292, 68430), (365, 54744), (438, 45620), (584, 34215), (730, 27372), (876, 22810), (1095, 18248), (1460, 13686), (1752, 11405), (2190, 9124), (2281, 8760), (2920, 6843), (4380, 4562)]