19564870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^2$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 40375440

約数和(自身を除く): 20810570

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 89, 95, 130, 178, 190, 247, 445, 494, 890, 1157, 1235, 1691, 2314, 2470, 3382, 5785, 7921, 8455, 11570, 15842, 16910, 21983, 39605, 43966, 79210, 102973, 109915, 150499, 205946, 219830, 300998, 514865, 752495, 1029730, 1504990, 1956487, 3912974, 9782435, 19564870]

約数ペア:

[(1, 19564870), (2, 9782435), (5, 3912974), (10, 1956487), (13, 1504990), (19, 1029730), (26, 752495), (38, 514865), (65, 300998), (89, 219830), (95, 205946), (130, 150499), (178, 109915), (190, 102973), (247, 79210), (445, 43966), (494, 39605), (890, 21983), (1157, 16910), (1235, 15842), (1691, 11570), (2314, 8455), (2470, 7921), (3382, 5785)]