21581940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1613}}^1$

素因数の和:1848

約数の個数: 48

約数和(自身を含む): 60738048

約数和(自身を除く): 39156108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 223, 446, 669, 892, 1115, 1338, 1613, 2230, 2676, 3226, 3345, 4460, 4839, 6452, 6690, 8065, 9678, 13380, 16130, 19356, 24195, 32260, 48390, 96780, 359699, 719398, 1079097, 1438796, 1798495, 2158194, 3596990, 4316388, 5395485, 7193980, 10790970, 21581940]

約数ペア:

[(1, 21581940), (2, 10790970), (3, 7193980), (4, 5395485), (5, 4316388), (6, 3596990), (10, 2158194), (12, 1798495), (15, 1438796), (20, 1079097), (30, 719398), (60, 359699), (223, 96780), (446, 48390), (669, 32260), (892, 24195), (1115, 19356), (1338, 16130), (1613, 13380), (2230, 9678), (2676, 8065), (3226, 6690), (3345, 6452), (4460, 4839)]