1280821700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{3547}}^1$

素因数の和:3741

約数の個数: 72

約数和(自身を含む): 2919521472

約数和(自身を除く): 1638699772

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 157, 230, 314, 460, 575, 628, 785, 1150, 1570, 2300, 3140, 3547, 3611, 3925, 7094, 7222, 7850, 14188, 14444, 15700, 17735, 18055, 35470, 36110, 70940, 72220, 81581, 88675, 90275, 163162, 177350, 180550, 326324, 354700, 361100, 407905, 556879, 815810, 1113758, 1631620, 2039525, 2227516, 2784395, 4079050, 5568790, 8158100, 11137580, 12808217, 13921975, 25616434, 27843950, 51232868, 55687900, 64041085, 128082170, 256164340, 320205425, 640410850, 1280821700]

約数ペア:

[(1, 1280821700), (2, 640410850), (4, 320205425), (5, 256164340), (10, 128082170), (20, 64041085), (23, 55687900), (25, 51232868), (46, 27843950), (50, 25616434), (92, 13921975), (100, 12808217), (115, 11137580), (157, 8158100), (230, 5568790), (314, 4079050), (460, 2784395), (575, 2227516), (628, 2039525), (785, 1631620), (1150, 1113758), (1570, 815810), (2300, 556879), (3140, 407905), (3547, 361100), (3611, 354700), (3925, 326324), (7094, 180550), (7222, 177350), (7850, 163162), (14188, 90275), (14444, 88675), (15700, 81581), (17735, 72220), (18055, 70940), (35470, 36110)]