28181560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3371}}^1$

素因数の和:3412

約数の個数: 64

約数和(自身を含む): 72835200

約数和(自身を除く): 44653640

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 3371, 4180, 6742, 8360, 13484, 16855, 26968, 33710, 37081, 64049, 67420, 74162, 128098, 134840, 148324, 185405, 256196, 296648, 320245, 370810, 512392, 640490, 704539, 741620, 1280980, 1409078, 1483240, 2561960, 2818156, 3522695, 5636312, 7045390, 14090780, 28181560]

約数ペア:

[(1, 28181560), (2, 14090780), (4, 7045390), (5, 5636312), (8, 3522695), (10, 2818156), (11, 2561960), (19, 1483240), (20, 1409078), (22, 1280980), (38, 741620), (40, 704539), (44, 640490), (55, 512392), (76, 370810), (88, 320245), (95, 296648), (110, 256196), (152, 185405), (190, 148324), (209, 134840), (220, 128098), (380, 74162), (418, 67420), (440, 64049), (760, 37081), (836, 33710), (1045, 26968), (1672, 16855), (2090, 13484), (3371, 8360), (4180, 6742)]