13121960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{839}}^1$

素因数の和:890

約数の個数: 64

約数和(自身を含む): 32659200

約数和(自身を除く): 19537240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 839, 920, 1564, 1678, 1955, 3128, 3356, 3910, 4195, 6712, 7820, 8390, 14263, 15640, 16780, 19297, 28526, 33560, 38594, 57052, 71315, 77188, 96485, 114104, 142630, 154376, 192970, 285260, 328049, 385940, 570520, 656098, 771880, 1312196, 1640245, 2624392, 3280490, 6560980, 13121960]

約数ペア:

[(1, 13121960), (2, 6560980), (4, 3280490), (5, 2624392), (8, 1640245), (10, 1312196), (17, 771880), (20, 656098), (23, 570520), (34, 385940), (40, 328049), (46, 285260), (68, 192970), (85, 154376), (92, 142630), (115, 114104), (136, 96485), (170, 77188), (184, 71315), (230, 57052), (340, 38594), (391, 33560), (460, 28526), (680, 19297), (782, 16780), (839, 15640), (920, 14263), (1564, 8390), (1678, 7820), (1955, 6712), (3128, 4195), (3356, 3910)]