19940895

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{383}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 17798625

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 89, 117, 195, 267, 383, 445, 585, 801, 1149, 1157, 1335, 1915, 3447, 3471, 4005, 4979, 5745, 5785, 10413, 14937, 17235, 17355, 24895, 34087, 44811, 52065, 74685, 102261, 170435, 224055, 306783, 443131, 511305, 1329393, 1533915, 2215655, 3988179, 6646965, 19940895]

約数ペア:

[(1, 19940895), (3, 6646965), (5, 3988179), (9, 2215655), (13, 1533915), (15, 1329393), (39, 511305), (45, 443131), (65, 306783), (89, 224055), (117, 170435), (195, 102261), (267, 74685), (383, 52065), (445, 44811), (585, 34087), (801, 24895), (1149, 17355), (1157, 17235), (1335, 14937), (1915, 10413), (3447, 5785), (3471, 5745), (4005, 4979)]