21586370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{241}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 43045992

約数和(自身を除く): 21459622

約数列:

[1, 2, 5, 10, 13, 26, 53, 65, 106, 130, 169, 241, 265, 338, 482, 530, 689, 845, 1205, 1378, 1690, 2410, 3133, 3445, 6266, 6890, 8957, 12773, 15665, 17914, 25546, 31330, 40729, 44785, 63865, 81458, 89570, 127730, 166049, 203645, 332098, 407290, 830245, 1660490, 2158637, 4317274, 10793185, 21586370]

約数ペア:

[(1, 21586370), (2, 10793185), (5, 4317274), (10, 2158637), (13, 1660490), (26, 830245), (53, 407290), (65, 332098), (106, 203645), (130, 166049), (169, 127730), (241, 89570), (265, 81458), (338, 63865), (482, 44785), (530, 40729), (689, 31330), (845, 25546), (1205, 17914), (1378, 15665), (1690, 12773), (2410, 8957), (3133, 6890), (3445, 6266)]