18920490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1613}}^1$

素因数の和:1663

約数の個数: 64

約数和(自身を含む): 50201856

約数和(自身を除く): 31281366

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 30, 34, 46, 51, 69, 85, 102, 115, 138, 170, 230, 255, 345, 391, 510, 690, 782, 1173, 1613, 1955, 2346, 3226, 3910, 4839, 5865, 8065, 9678, 11730, 16130, 24195, 27421, 37099, 48390, 54842, 74198, 82263, 111297, 137105, 164526, 185495, 222594, 274210, 370990, 411315, 556485, 630683, 822630, 1112970, 1261366, 1892049, 3153415, 3784098, 6306830, 9460245, 18920490]

約数ペア:

[(1, 18920490), (2, 9460245), (3, 6306830), (5, 3784098), (6, 3153415), (10, 1892049), (15, 1261366), (17, 1112970), (23, 822630), (30, 630683), (34, 556485), (46, 411315), (51, 370990), (69, 274210), (85, 222594), (102, 185495), (115, 164526), (138, 137105), (170, 111297), (230, 82263), (255, 74198), (345, 54842), (391, 48390), (510, 37099), (690, 27421), (782, 24195), (1173, 16130), (1613, 11730), (1955, 9678), (2346, 8065), (3226, 5865), (3910, 4839)]