19945770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:479

約数の個数: 64

約数和(自身を含む): 52012800

約数和(自身を除く): 32067030

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 199, 257, 390, 398, 514, 597, 771, 995, 1194, 1285, 1542, 1990, 2570, 2587, 2985, 3341, 3855, 5174, 5970, 6682, 7710, 7761, 10023, 12935, 15522, 16705, 20046, 25870, 33410, 38805, 50115, 51143, 77610, 100230, 102286, 153429, 255715, 306858, 511430, 664859, 767145, 1329718, 1534290, 1994577, 3324295, 3989154, 6648590, 9972885, 19945770]

約数ペア:

[(1, 19945770), (2, 9972885), (3, 6648590), (5, 3989154), (6, 3324295), (10, 1994577), (13, 1534290), (15, 1329718), (26, 767145), (30, 664859), (39, 511430), (65, 306858), (78, 255715), (130, 153429), (195, 102286), (199, 100230), (257, 77610), (390, 51143), (398, 50115), (514, 38805), (597, 33410), (771, 25870), (995, 20046), (1194, 16705), (1285, 15522), (1542, 12935), (1990, 10023), (2570, 7761), (2587, 7710), (2985, 6682), (3341, 5970), (3855, 5174)]