20180258720

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{74587}}^1$

素因数の和:74710

約数の個数: 96

約数和(自身を含む): 50749675200

約数和(自身を除く): 30569416480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 89, 95, 152, 160, 178, 190, 304, 356, 380, 445, 608, 712, 760, 890, 1424, 1520, 1691, 1780, 2848, 3040, 3382, 3560, 6764, 7120, 8455, 13528, 14240, 16910, 27056, 33820, 54112, 67640, 74587, 135280, 149174, 270560, 298348, 372935, 596696, 745870, 1193392, 1417153, 1491740, 2386784, 2834306, 2983480, 5668612, 5966960, 6638243, 7085765, 11337224, 11933920, 13276486, 14171530, 22674448, 26552972, 28343060, 33191215, 45348896, 53105944, 56686120, 66382430, 106211888, 113372240, 126126617, 132764860, 212423776, 226744480, 252253234, 265529720, 504506468, 531059440, 630633085, 1009012936, 1062118880, 1261266170, 2018025872, 2522532340, 4036051744, 5045064680, 10090129360, 20180258720]

約数ペア:

[(1, 20180258720), (2, 10090129360), (4, 5045064680), (5, 4036051744), (8, 2522532340), (10, 2018025872), (16, 1261266170), (19, 1062118880), (20, 1009012936), (32, 630633085), (38, 531059440), (40, 504506468), (76, 265529720), (80, 252253234), (89, 226744480), (95, 212423776), (152, 132764860), (160, 126126617), (178, 113372240), (190, 106211888), (304, 66382430), (356, 56686120), (380, 53105944), (445, 45348896), (608, 33191215), (712, 28343060), (760, 26552972), (890, 22674448), (1424, 14171530), (1520, 13276486), (1691, 11933920), (1780, 11337224), (2848, 7085765), (3040, 6638243), (3382, 5966960), (3560, 5668612), (6764, 2983480), (7120, 2834306), (8455, 2386784), (13528, 1491740), (14240, 1417153), (16910, 1193392), (27056, 745870), (33820, 596696), (54112, 372935), (67640, 298348), (74587, 270560), (135280, 149174)]