64305880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{443}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 153446400

約数和(自身を除く): 89140520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 191, 380, 382, 443, 760, 764, 886, 955, 1528, 1772, 1910, 2215, 3544, 3629, 3820, 4430, 7258, 7640, 8417, 8860, 14516, 16834, 17720, 18145, 29032, 33668, 36290, 42085, 67336, 72580, 84170, 84613, 145160, 168340, 169226, 336680, 338452, 423065, 676904, 846130, 1607647, 1692260, 3215294, 3384520, 6430588, 8038235, 12861176, 16076470, 32152940, 64305880]

約数ペア:

[(1, 64305880), (2, 32152940), (4, 16076470), (5, 12861176), (8, 8038235), (10, 6430588), (19, 3384520), (20, 3215294), (38, 1692260), (40, 1607647), (76, 846130), (95, 676904), (152, 423065), (190, 338452), (191, 336680), (380, 169226), (382, 168340), (443, 145160), (760, 84613), (764, 84170), (886, 72580), (955, 67336), (1528, 42085), (1772, 36290), (1910, 33668), (2215, 29032), (3544, 18145), (3629, 17720), (3820, 16834), (4430, 14516), (7258, 8860), (7640, 8417)]