30628760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{211}}^1$

素因数の和:432

約数の個数: 64

約数和(自身を含む): 73267200

約数和(自身を除く): 42638440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 191, 211, 380, 382, 422, 760, 764, 844, 955, 1055, 1528, 1688, 1910, 2110, 3629, 3820, 4009, 4220, 7258, 7640, 8018, 8440, 14516, 16036, 18145, 20045, 29032, 32072, 36290, 40090, 40301, 72580, 80180, 80602, 145160, 160360, 161204, 201505, 322408, 403010, 765719, 806020, 1531438, 1612040, 3062876, 3828595, 6125752, 7657190, 15314380, 30628760]

約数ペア:

[(1, 30628760), (2, 15314380), (4, 7657190), (5, 6125752), (8, 3828595), (10, 3062876), (19, 1612040), (20, 1531438), (38, 806020), (40, 765719), (76, 403010), (95, 322408), (152, 201505), (190, 161204), (191, 160360), (211, 145160), (380, 80602), (382, 80180), (422, 72580), (760, 40301), (764, 40090), (844, 36290), (955, 32072), (1055, 29032), (1528, 20045), (1688, 18145), (1910, 16036), (2110, 14516), (3629, 8440), (3820, 8018), (4009, 7640), (4220, 7258)]