19420880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:276

約数の個数: 80

約数和(自身を含む): 47996928

約数和(自身を除く): 28576048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 191, 205, 248, 310, 328, 382, 410, 496, 620, 656, 764, 820, 955, 1240, 1271, 1528, 1640, 1910, 2480, 2542, 3056, 3280, 3820, 5084, 5921, 6355, 7640, 7831, 10168, 11842, 12710, 15280, 15662, 20336, 23684, 25420, 29605, 31324, 39155, 47368, 50840, 59210, 62648, 78310, 94736, 101680, 118420, 125296, 156620, 236840, 242761, 313240, 473680, 485522, 626480, 971044, 1213805, 1942088, 2427610, 3884176, 4855220, 9710440, 19420880]

約数ペア:

[(1, 19420880), (2, 9710440), (4, 4855220), (5, 3884176), (8, 2427610), (10, 1942088), (16, 1213805), (20, 971044), (31, 626480), (40, 485522), (41, 473680), (62, 313240), (80, 242761), (82, 236840), (124, 156620), (155, 125296), (164, 118420), (191, 101680), (205, 94736), (248, 78310), (310, 62648), (328, 59210), (382, 50840), (410, 47368), (496, 39155), (620, 31324), (656, 29605), (764, 25420), (820, 23684), (955, 20336), (1240, 15662), (1271, 15280), (1528, 12710), (1640, 11842), (1910, 10168), (2480, 7831), (2542, 7640), (3056, 6355), (3280, 5921), (3820, 5084)]