21376330240

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^2\times {\mathrm{8689}}^1$

素因数の和:8774

約数の個数: 120

約数和(自身を含む): 52965845460

約数和(自身を除く): 31589515220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 961, 992, 1240, 1280, 1922, 1984, 2480, 2560, 3844, 3968, 4805, 4960, 7688, 7936, 8689, 9610, 9920, 15376, 15872, 17378, 19220, 19840, 30752, 34756, 38440, 39680, 43445, 61504, 69512, 76880, 79360, 86890, 123008, 139024, 153760, 173780, 246016, 269359, 278048, 307520, 347560, 492032, 538718, 556096, 615040, 695120, 1077436, 1112192, 1230080, 1346795, 1390240, 2154872, 2224384, 2460160, 2693590, 2780480, 4309744, 4448768, 5387180, 5560960, 8350129, 8619488, 10774360, 11121920, 16700258, 17238976, 21548720, 22243840, 33400516, 34477952, 41750645, 43097440, 66801032, 68955904, 83501290, 86194880, 133602064, 137911808, 167002580, 172389760, 267204128, 334005160, 344779520, 534408256, 668010320, 689559040, 1068816512, 1336020640, 2137633024, 2672041280, 4275266048, 5344082560, 10688165120, 21376330240]

約数ペア:

[(1, 21376330240), (2, 10688165120), (4, 5344082560), (5, 4275266048), (8, 2672041280), (10, 2137633024), (16, 1336020640), (20, 1068816512), (31, 689559040), (32, 668010320), (40, 534408256), (62, 344779520), (64, 334005160), (80, 267204128), (124, 172389760), (128, 167002580), (155, 137911808), (160, 133602064), (248, 86194880), (256, 83501290), (310, 68955904), (320, 66801032), (496, 43097440), (512, 41750645), (620, 34477952), (640, 33400516), (961, 22243840), (992, 21548720), (1240, 17238976), (1280, 16700258), (1922, 11121920), (1984, 10774360), (2480, 8619488), (2560, 8350129), (3844, 5560960), (3968, 5387180), (4805, 4448768), (4960, 4309744), (7688, 2780480), (7936, 2693590), (8689, 2460160), (9610, 2224384), (9920, 2154872), (15376, 1390240), (15872, 1346795), (17378, 1230080), (19220, 1112192), (19840, 1077436), (30752, 695120), (34756, 615040), (38440, 556096), (39680, 538718), (43445, 492032), (61504, 347560), (69512, 307520), (76880, 278048), (79360, 269359), (86890, 246016), (123008, 173780), (139024, 153760)]