217551100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2357}}^1$

素因数の和:2455

約数の個数: 72

約数和(自身を含む): 515779488

約数和(自身を除く): 298228388

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 71, 100, 130, 142, 260, 284, 325, 355, 650, 710, 923, 1300, 1420, 1775, 1846, 2357, 3550, 3692, 4615, 4714, 7100, 9230, 9428, 11785, 18460, 23075, 23570, 30641, 46150, 47140, 58925, 61282, 92300, 117850, 122564, 153205, 167347, 235700, 306410, 334694, 612820, 669388, 766025, 836735, 1532050, 1673470, 2175511, 3064100, 3346940, 4183675, 4351022, 8367350, 8702044, 10877555, 16734700, 21755110, 43510220, 54387775, 108775550, 217551100]

約数ペア:

[(1, 217551100), (2, 108775550), (4, 54387775), (5, 43510220), (10, 21755110), (13, 16734700), (20, 10877555), (25, 8702044), (26, 8367350), (50, 4351022), (52, 4183675), (65, 3346940), (71, 3064100), (100, 2175511), (130, 1673470), (142, 1532050), (260, 836735), (284, 766025), (325, 669388), (355, 612820), (650, 334694), (710, 306410), (923, 235700), (1300, 167347), (1420, 153205), (1775, 122564), (1846, 117850), (2357, 92300), (3550, 61282), (3692, 58925), (4615, 47140), (4714, 46150), (7100, 30641), (9230, 23570), (9428, 23075), (11785, 18460)]