20120158325

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{307}}^1$

素因数の和:591

約数の個数: 72

約数和(自身を含む): 27295669632

約数和(自身を除く): 7175511307

約数列:

[1, 5, 17, 25, 47, 85, 193, 235, 289, 307, 425, 799, 965, 1175, 1445, 1535, 3281, 3995, 4825, 5219, 7225, 7675, 9071, 13583, 14429, 16405, 19975, 26095, 45355, 55777, 59251, 67915, 72145, 82025, 88723, 130475, 154207, 226775, 245293, 278885, 296255, 339575, 360725, 443615, 771035, 1007267, 1226465, 1394425, 1481275, 2218075, 2621519, 2784797, 3855175, 4169981, 5036335, 6132325, 13107595, 13923985, 17123539, 20849905, 25181675, 47341549, 65537975, 69619925, 85617695, 104249525, 236707745, 428088475, 804806333, 1183538725, 4024031665, 20120158325]

約数ペア:

[(1, 20120158325), (5, 4024031665), (17, 1183538725), (25, 804806333), (47, 428088475), (85, 236707745), (193, 104249525), (235, 85617695), (289, 69619925), (307, 65537975), (425, 47341549), (799, 25181675), (965, 20849905), (1175, 17123539), (1445, 13923985), (1535, 13107595), (3281, 6132325), (3995, 5036335), (4825, 4169981), (5219, 3855175), (7225, 2784797), (7675, 2621519), (9071, 2218075), (13583, 1481275), (14429, 1394425), (16405, 1226465), (19975, 1007267), (26095, 771035), (45355, 443615), (55777, 360725), (59251, 339575), (67915, 296255), (72145, 278885), (82025, 245293), (88723, 226775), (130475, 154207)]