21110440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40597}}^1$

素因数の和:40621

約数の個数: 32

約数和(自身を含む): 51153480

約数和(自身を除く): 30043040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40597, 81194, 162388, 202985, 324776, 405970, 527761, 811940, 1055522, 1623880, 2111044, 2638805, 4222088, 5277610, 10555220, 21110440]

約数ペア:

[(1, 21110440), (2, 10555220), (4, 5277610), (5, 4222088), (8, 2638805), (10, 2111044), (13, 1623880), (20, 1055522), (26, 811940), (40, 527761), (52, 405970), (65, 324776), (104, 202985), (130, 162388), (260, 81194), (520, 40597)]