199538320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1319}}^1$

素因数の和:1424

約数の個数: 80

約数和(自身を含む): 487111680

約数和(自身を除く): 287573360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 61, 62, 80, 122, 124, 155, 244, 248, 305, 310, 488, 496, 610, 620, 976, 1220, 1240, 1319, 1891, 2440, 2480, 2638, 3782, 4880, 5276, 6595, 7564, 9455, 10552, 13190, 15128, 18910, 21104, 26380, 30256, 37820, 40889, 52760, 75640, 80459, 81778, 105520, 151280, 160918, 163556, 204445, 321836, 327112, 402295, 408890, 643672, 654224, 804590, 817780, 1287344, 1609180, 1635560, 2494229, 3218360, 3271120, 4988458, 6436720, 9976916, 12471145, 19953832, 24942290, 39907664, 49884580, 99769160, 199538320]

約数ペア:

[(1, 199538320), (2, 99769160), (4, 49884580), (5, 39907664), (8, 24942290), (10, 19953832), (16, 12471145), (20, 9976916), (31, 6436720), (40, 4988458), (61, 3271120), (62, 3218360), (80, 2494229), (122, 1635560), (124, 1609180), (155, 1287344), (244, 817780), (248, 804590), (305, 654224), (310, 643672), (488, 408890), (496, 402295), (610, 327112), (620, 321836), (976, 204445), (1220, 163556), (1240, 160918), (1319, 151280), (1891, 105520), (2440, 81778), (2480, 80459), (2638, 75640), (3782, 52760), (4880, 40889), (5276, 37820), (6595, 30256), (7564, 26380), (9455, 21104), (10552, 18910), (13190, 15128)]