78676720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{271}}^1$

素因数の和:494

約数の個数: 80

約数和(自身を含む): 194273280

約数和(自身を除く): 115596560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 191, 271, 304, 380, 382, 542, 760, 764, 955, 1084, 1355, 1520, 1528, 1910, 2168, 2710, 3056, 3629, 3820, 4336, 5149, 5420, 7258, 7640, 10298, 10840, 14516, 15280, 18145, 20596, 21680, 25745, 29032, 36290, 41192, 51490, 51761, 58064, 72580, 82384, 102980, 103522, 145160, 205960, 207044, 258805, 290320, 411920, 414088, 517610, 828176, 983459, 1035220, 1966918, 2070440, 3933836, 4140880, 4917295, 7867672, 9834590, 15735344, 19669180, 39338360, 78676720]

約数ペア:

[(1, 78676720), (2, 39338360), (4, 19669180), (5, 15735344), (8, 9834590), (10, 7867672), (16, 4917295), (19, 4140880), (20, 3933836), (38, 2070440), (40, 1966918), (76, 1035220), (80, 983459), (95, 828176), (152, 517610), (190, 414088), (191, 411920), (271, 290320), (304, 258805), (380, 207044), (382, 205960), (542, 145160), (760, 103522), (764, 102980), (955, 82384), (1084, 72580), (1355, 58064), (1520, 51761), (1528, 51490), (1910, 41192), (2168, 36290), (2710, 29032), (3056, 25745), (3629, 21680), (3820, 20596), (4336, 18145), (5149, 15280), (5420, 14516), (7258, 10840), (7640, 10298)]