28638890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{353}}^1$

素因数の和:447

約数の個数: 64

約数和(自身を含む): 63210240

約数和(自身を除く): 34571350

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 61, 70, 95, 122, 133, 190, 266, 305, 353, 427, 610, 665, 706, 854, 1159, 1330, 1765, 2135, 2318, 2471, 3530, 4270, 4942, 5795, 6707, 8113, 11590, 12355, 13414, 16226, 21533, 24710, 33535, 40565, 43066, 46949, 67070, 81130, 93898, 107665, 150731, 215330, 234745, 301462, 409127, 469490, 753655, 818254, 1507310, 2045635, 2863889, 4091270, 5727778, 14319445, 28638890]

約数ペア:

[(1, 28638890), (2, 14319445), (5, 5727778), (7, 4091270), (10, 2863889), (14, 2045635), (19, 1507310), (35, 818254), (38, 753655), (61, 469490), (70, 409127), (95, 301462), (122, 234745), (133, 215330), (190, 150731), (266, 107665), (305, 93898), (353, 81130), (427, 67070), (610, 46949), (665, 43066), (706, 40565), (854, 33535), (1159, 24710), (1330, 21533), (1765, 16226), (2135, 13414), (2318, 12355), (2471, 11590), (3530, 8113), (4270, 6707), (4942, 5795)]