18998860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 44871120

約数和(自身を除く): 25872260

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 173, 190, 289, 323, 340, 346, 380, 578, 646, 692, 865, 1156, 1292, 1445, 1615, 1730, 2890, 2941, 3230, 3287, 3460, 5491, 5780, 5882, 6460, 6574, 10982, 11764, 13148, 14705, 16435, 21964, 27455, 29410, 32870, 49997, 54910, 55879, 58820, 65740, 99994, 109820, 111758, 199988, 223516, 249985, 279395, 499970, 558790, 949943, 999940, 1117580, 1899886, 3799772, 4749715, 9499430, 18998860]

約数ペア:

[(1, 18998860), (2, 9499430), (4, 4749715), (5, 3799772), (10, 1899886), (17, 1117580), (19, 999940), (20, 949943), (34, 558790), (38, 499970), (68, 279395), (76, 249985), (85, 223516), (95, 199988), (170, 111758), (173, 109820), (190, 99994), (289, 65740), (323, 58820), (340, 55879), (346, 54910), (380, 49997), (578, 32870), (646, 29410), (692, 27455), (865, 21964), (1156, 16435), (1292, 14705), (1445, 13148), (1615, 11764), (1730, 10982), (2890, 6574), (2941, 6460), (3230, 5882), (3287, 5780), (3460, 5491)]