1640398520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{14929}}^1$

素因数の和:15048

約数の個数: 64

約数和(自身を含む): 3837607200

約数和(自身を除く): 2197208680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 67, 82, 134, 164, 205, 268, 328, 335, 410, 536, 670, 820, 1340, 1640, 2680, 2747, 5494, 10988, 13735, 14929, 21976, 27470, 29858, 54940, 59716, 74645, 109880, 119432, 149290, 298580, 597160, 612089, 1000243, 1224178, 2000486, 2448356, 3060445, 4000972, 4896712, 5001215, 6120890, 8001944, 10002430, 12241780, 20004860, 24483560, 40009720, 41009963, 82019926, 164039852, 205049815, 328079704, 410099630, 820199260, 1640398520]

約数ペア:

[(1, 1640398520), (2, 820199260), (4, 410099630), (5, 328079704), (8, 205049815), (10, 164039852), (20, 82019926), (40, 41009963), (41, 40009720), (67, 24483560), (82, 20004860), (134, 12241780), (164, 10002430), (205, 8001944), (268, 6120890), (328, 5001215), (335, 4896712), (410, 4000972), (536, 3060445), (670, 2448356), (820, 2000486), (1340, 1224178), (1640, 1000243), (2680, 612089), (2747, 597160), (5494, 298580), (10988, 149290), (13735, 119432), (14929, 109880), (21976, 74645), (27470, 59716), (29858, 54940)]