21869380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{233}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 52422552

約数和(自身を除く): 30553172

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 233, 247, 260, 361, 380, 466, 494, 722, 932, 988, 1165, 1235, 1444, 1805, 2330, 2470, 3029, 3610, 4427, 4660, 4693, 4940, 6058, 7220, 8854, 9386, 12116, 15145, 17708, 18772, 22135, 23465, 30290, 44270, 46930, 57551, 60580, 84113, 88540, 93860, 115102, 168226, 230204, 287755, 336452, 420565, 575510, 841130, 1093469, 1151020, 1682260, 2186938, 4373876, 5467345, 10934690, 21869380]

約数ペア:

[(1, 21869380), (2, 10934690), (4, 5467345), (5, 4373876), (10, 2186938), (13, 1682260), (19, 1151020), (20, 1093469), (26, 841130), (38, 575510), (52, 420565), (65, 336452), (76, 287755), (95, 230204), (130, 168226), (190, 115102), (233, 93860), (247, 88540), (260, 84113), (361, 60580), (380, 57551), (466, 46930), (494, 44270), (722, 30290), (932, 23465), (988, 22135), (1165, 18772), (1235, 17708), (1444, 15145), (1805, 12116), (2330, 9386), (2470, 8854), (3029, 7220), (3610, 6058), (4427, 4940), (4660, 4693)]