28679960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{229}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 67564800

約数和(自身を除く): 38884840

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 124, 155, 202, 229, 248, 310, 404, 458, 505, 620, 808, 916, 1010, 1145, 1240, 1832, 2020, 2290, 3131, 4040, 4580, 6262, 7099, 9160, 12524, 14198, 15655, 23129, 25048, 28396, 31310, 35495, 46258, 56792, 62620, 70990, 92516, 115645, 125240, 141980, 185032, 231290, 283960, 462580, 716999, 925160, 1433998, 2867996, 3584995, 5735992, 7169990, 14339980, 28679960]

約数ペア:

[(1, 28679960), (2, 14339980), (4, 7169990), (5, 5735992), (8, 3584995), (10, 2867996), (20, 1433998), (31, 925160), (40, 716999), (62, 462580), (101, 283960), (124, 231290), (155, 185032), (202, 141980), (229, 125240), (248, 115645), (310, 92516), (404, 70990), (458, 62620), (505, 56792), (620, 46258), (808, 35495), (916, 31310), (1010, 28396), (1145, 25048), (1240, 23129), (1832, 15655), (2020, 14198), (2290, 12524), (3131, 9160), (4040, 7099), (4580, 6262)]