78821880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 251596800

約数和(自身を除く): 172774920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 181, 190, 191, 228, 285, 362, 380, 382, 456, 543, 570, 573, 724, 760, 764, 905, 955, 1086, 1140, 1146, 1448, 1528, 1810, 1910, 2172, 2280, 2292, 2715, 2865, 3439, 3620, 3629, 3820, 4344, 4584, 5430, 5730, 6878, 7240, 7258, 7640, 10317, 10860, 10887, 11460, 13756, 14516, 17195, 18145, 20634, 21720, 21774, 22920, 27512, 29032, 34390, 34571, 36290, 41268, 43548, 51585, 54435, 68780, 69142, 72580, 82536, 87096, 103170, 103713, 108870, 137560, 138284, 145160, 172855, 206340, 207426, 217740, 276568, 345710, 412680, 414852, 435480, 518565, 656849, 691420, 829704, 1037130, 1313698, 1382840, 1970547, 2074260, 2627396, 3284245, 3941094, 4148520, 5254792, 6568490, 7882188, 9852735, 13136980, 15764376, 19705470, 26273960, 39410940, 78821880]

約数ペア:

[(1, 78821880), (2, 39410940), (3, 26273960), (4, 19705470), (5, 15764376), (6, 13136980), (8, 9852735), (10, 7882188), (12, 6568490), (15, 5254792), (19, 4148520), (20, 3941094), (24, 3284245), (30, 2627396), (38, 2074260), (40, 1970547), (57, 1382840), (60, 1313698), (76, 1037130), (95, 829704), (114, 691420), (120, 656849), (152, 518565), (181, 435480), (190, 414852), (191, 412680), (228, 345710), (285, 276568), (362, 217740), (380, 207426), (382, 206340), (456, 172855), (543, 145160), (570, 138284), (573, 137560), (724, 108870), (760, 103713), (764, 103170), (905, 87096), (955, 82536), (1086, 72580), (1140, 69142), (1146, 68780), (1448, 54435), (1528, 51585), (1810, 43548), (1910, 41268), (2172, 36290), (2280, 34571), (2292, 34390), (2715, 29032), (2865, 27512), (3439, 22920), (3620, 21774), (3629, 21720), (3820, 20634), (4344, 18145), (4584, 17195), (5430, 14516), (5730, 13756), (6878, 11460), (7240, 10887), (7258, 10860), (7640, 10317)]