778199920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{509}}^1\times {\mathrm{659}}^1$

素因数の和:1210

約数の個数: 80

約数和(自身を含む): 1878228000

約数和(自身を除く): 1100028080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 509, 580, 659, 1018, 1160, 1318, 2036, 2320, 2545, 2636, 3295, 4072, 5090, 5272, 6590, 8144, 10180, 10544, 13180, 14761, 19111, 20360, 26360, 29522, 38222, 40720, 52720, 59044, 73805, 76444, 95555, 118088, 147610, 152888, 191110, 236176, 295220, 305776, 335431, 382220, 590440, 670862, 764440, 1180880, 1341724, 1528880, 1677155, 2683448, 3354310, 5366896, 6708620, 9727499, 13417240, 19454998, 26834480, 38909996, 48637495, 77819992, 97274990, 155639984, 194549980, 389099960, 778199920]

約数ペア:

[(1, 778199920), (2, 389099960), (4, 194549980), (5, 155639984), (8, 97274990), (10, 77819992), (16, 48637495), (20, 38909996), (29, 26834480), (40, 19454998), (58, 13417240), (80, 9727499), (116, 6708620), (145, 5366896), (232, 3354310), (290, 2683448), (464, 1677155), (509, 1528880), (580, 1341724), (659, 1180880), (1018, 764440), (1160, 670862), (1318, 590440), (2036, 382220), (2320, 335431), (2545, 305776), (2636, 295220), (3295, 236176), (4072, 191110), (5090, 152888), (5272, 147610), (6590, 118088), (8144, 95555), (10180, 76444), (10544, 73805), (13180, 59044), (14761, 52720), (19111, 40720), (20360, 38222), (26360, 29522)]