78526720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1979}}^1$

素因数の和:2031

約数の個数: 72

約数和(自身を含む): 194261760

約数和(自身を除く): 115735040

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, 620, 640, 992, 1240, 1280, 1979, 1984, 2480, 3958, 3968, 4960, 7916, 7936, 9895, 9920, 15832, 19790, 19840, 31664, 39580, 39680, 61349, 63328, 79160, 122698, 126656, 158320, 245396, 253312, 306745, 316640, 490792, 506624, 613490, 633280, 981584, 1226980, 1266560, 1963168, 2453960, 2533120, 3926336, 4907920, 7852672, 9815840, 15705344, 19631680, 39263360, 78526720]

約数ペア:

[(1, 78526720), (2, 39263360), (4, 19631680), (5, 15705344), (8, 9815840), (10, 7852672), (16, 4907920), (20, 3926336), (31, 2533120), (32, 2453960), (40, 1963168), (62, 1266560), (64, 1226980), (80, 981584), (124, 633280), (128, 613490), (155, 506624), (160, 490792), (248, 316640), (256, 306745), (310, 253312), (320, 245396), (496, 158320), (620, 126656), (640, 122698), (992, 79160), (1240, 63328), (1280, 61349), (1979, 39680), (1984, 39580), (2480, 31664), (3958, 19840), (3968, 19790), (4960, 15832), (7916, 9920), (7936, 9895)]