21693680

素因数分解:

$2^4\times 5^1\times {\mathrm{373}}^1\times {\mathrm{727}}^1$

素因数の和:1113

約数の個数: 40

約数和(自身を含む): 50642592

約数和(自身を除く): 28948912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 373, 727, 746, 1454, 1492, 1865, 2908, 2984, 3635, 3730, 5816, 5968, 7270, 7460, 11632, 14540, 14920, 29080, 29840, 58160, 271171, 542342, 1084684, 1355855, 2169368, 2711710, 4338736, 5423420, 10846840, 21693680]

約数ペア:

[(1, 21693680), (2, 10846840), (4, 5423420), (5, 4338736), (8, 2711710), (10, 2169368), (16, 1355855), (20, 1084684), (40, 542342), (80, 271171), (373, 58160), (727, 29840), (746, 29080), (1454, 14920), (1492, 14540), (1865, 11632), (2908, 7460), (2984, 7270), (3635, 5968), (3730, 5816)]