19471720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:466

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 26976920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 383, 410, 620, 766, 820, 1240, 1271, 1532, 1640, 1915, 2542, 3064, 3830, 5084, 6355, 7660, 10168, 11873, 12710, 15320, 15703, 23746, 25420, 31406, 47492, 50840, 59365, 62812, 78515, 94984, 118730, 125624, 157030, 237460, 314060, 474920, 486793, 628120, 973586, 1947172, 2433965, 3894344, 4867930, 9735860, 19471720]

約数ペア:

[(1, 19471720), (2, 9735860), (4, 4867930), (5, 3894344), (8, 2433965), (10, 1947172), (20, 973586), (31, 628120), (40, 486793), (41, 474920), (62, 314060), (82, 237460), (124, 157030), (155, 125624), (164, 118730), (205, 94984), (248, 78515), (310, 62812), (328, 59365), (383, 50840), (410, 47492), (620, 31406), (766, 25420), (820, 23746), (1240, 15703), (1271, 15320), (1532, 12710), (1640, 11873), (1915, 10168), (2542, 7660), (3064, 6355), (3830, 5084)]