18541720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:848

約数の個数: 64

約数和(自身を含む): 45388800

約数和(自身を除く): 26847080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 760, 787, 1178, 1240, 1574, 2356, 2945, 3148, 3935, 4712, 5890, 6296, 7870, 11780, 14953, 15740, 23560, 24397, 29906, 31480, 48794, 59812, 74765, 97588, 119624, 121985, 149530, 195176, 243970, 299060, 463543, 487940, 598120, 927086, 975880, 1854172, 2317715, 3708344, 4635430, 9270860, 18541720]

約数ペア:

[(1, 18541720), (2, 9270860), (4, 4635430), (5, 3708344), (8, 2317715), (10, 1854172), (19, 975880), (20, 927086), (31, 598120), (38, 487940), (40, 463543), (62, 299060), (76, 243970), (95, 195176), (124, 149530), (152, 121985), (155, 119624), (190, 97588), (248, 74765), (310, 59812), (380, 48794), (589, 31480), (620, 29906), (760, 24397), (787, 23560), (1178, 15740), (1240, 14953), (1574, 11780), (2356, 7870), (2945, 6296), (3148, 5890), (3935, 4712)]