19945016504

素因数分解:

$2^3\times 7^1\times {\mathrm{389}}^1\times {\mathrm{631}}^1\times {\mathrm{1451}}^1$

素因数の和:2484

約数の個数: 64

約数和(自身を含む): 42946675200

約数和(自身を除く): 23001658696

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 389, 631, 778, 1262, 1451, 1556, 2524, 2723, 2902, 3112, 4417, 5048, 5446, 5804, 8834, 10157, 10892, 11608, 17668, 20314, 21784, 35336, 40628, 81256, 245459, 490918, 564439, 915581, 981836, 1128878, 1718213, 1831162, 1963672, 2257756, 3436426, 3662324, 3951073, 4515512, 6409067, 6872852, 7324648, 7902146, 12818134, 13745704, 15804292, 25636268, 31608584, 51272536, 356161009, 712322018, 1424644036, 2493127063, 2849288072, 4986254126, 9972508252, 19945016504]

約数ペア:

[(1, 19945016504), (2, 9972508252), (4, 4986254126), (7, 2849288072), (8, 2493127063), (14, 1424644036), (28, 712322018), (56, 356161009), (389, 51272536), (631, 31608584), (778, 25636268), (1262, 15804292), (1451, 13745704), (1556, 12818134), (2524, 7902146), (2723, 7324648), (2902, 6872852), (3112, 6409067), (4417, 4515512), (5048, 3951073), (5446, 3662324), (5804, 3436426), (8834, 2257756), (10157, 1963672), (10892, 1831162), (11608, 1718213), (17668, 1128878), (20314, 981836), (21784, 915581), (35336, 564439), (40628, 490918), (81256, 245459)]