18372920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 26533480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 41, 68, 82, 85, 136, 164, 170, 205, 328, 340, 410, 659, 680, 697, 820, 1318, 1394, 1640, 2636, 2788, 3295, 3485, 5272, 5576, 6590, 6970, 11203, 13180, 13940, 22406, 26360, 27019, 27880, 44812, 54038, 56015, 89624, 108076, 112030, 135095, 216152, 224060, 270190, 448120, 459323, 540380, 918646, 1080760, 1837292, 2296615, 3674584, 4593230, 9186460, 18372920]

約数ペア:

[(1, 18372920), (2, 9186460), (4, 4593230), (5, 3674584), (8, 2296615), (10, 1837292), (17, 1080760), (20, 918646), (34, 540380), (40, 459323), (41, 448120), (68, 270190), (82, 224060), (85, 216152), (136, 135095), (164, 112030), (170, 108076), (205, 89624), (328, 56015), (340, 54038), (410, 44812), (659, 27880), (680, 27019), (697, 26360), (820, 22406), (1318, 13940), (1394, 13180), (1640, 11203), (2636, 6970), (2788, 6590), (3295, 5576), (3485, 5272)]