19314640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 48121920

約数和(自身を除く): 28807280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 97, 131, 152, 190, 194, 262, 304, 380, 388, 485, 524, 655, 760, 776, 970, 1048, 1310, 1520, 1552, 1843, 1940, 2096, 2489, 2620, 3686, 3880, 4978, 5240, 7372, 7760, 9215, 9956, 10480, 12445, 12707, 14744, 18430, 19912, 24890, 25414, 29488, 36860, 39824, 49780, 50828, 63535, 73720, 99560, 101656, 127070, 147440, 199120, 203312, 241433, 254140, 482866, 508280, 965732, 1016560, 1207165, 1931464, 2414330, 3862928, 4828660, 9657320, 19314640]

約数ペア:

[(1, 19314640), (2, 9657320), (4, 4828660), (5, 3862928), (8, 2414330), (10, 1931464), (16, 1207165), (19, 1016560), (20, 965732), (38, 508280), (40, 482866), (76, 254140), (80, 241433), (95, 203312), (97, 199120), (131, 147440), (152, 127070), (190, 101656), (194, 99560), (262, 73720), (304, 63535), (380, 50828), (388, 49780), (485, 39824), (524, 36860), (655, 29488), (760, 25414), (776, 24890), (970, 19912), (1048, 18430), (1310, 14744), (1520, 12707), (1552, 12445), (1843, 10480), (1940, 9956), (2096, 9215), (2489, 7760), (2620, 7372), (3686, 5240), (3880, 4978)]