21304860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5821}}^1$

素因数の和:5894

約数の個数: 48

約数和(自身を含む): 60641952

約数和(自身を除く): 39337092

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5821, 11642, 17463, 23284, 29105, 34926, 58210, 69852, 87315, 116420, 174630, 349260, 355081, 710162, 1065243, 1420324, 1775405, 2130486, 3550810, 4260972, 5326215, 7101620, 10652430, 21304860]

約数ペア:

[(1, 21304860), (2, 10652430), (3, 7101620), (4, 5326215), (5, 4260972), (6, 3550810), (10, 2130486), (12, 1775405), (15, 1420324), (20, 1065243), (30, 710162), (60, 355081), (61, 349260), (122, 174630), (183, 116420), (244, 87315), (305, 69852), (366, 58210), (610, 34926), (732, 29105), (915, 23284), (1220, 17463), (1830, 11642), (3660, 5821)]