19794285

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 40974336

約数和(自身を除く): 21180051

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 49, 63, 105, 141, 147, 191, 235, 245, 315, 329, 423, 441, 573, 705, 735, 955, 987, 1337, 1645, 1719, 2115, 2205, 2303, 2865, 2961, 4011, 4935, 6685, 6909, 8595, 8977, 9359, 11515, 12033, 14805, 20055, 20727, 26931, 28077, 34545, 44885, 46795, 60165, 62839, 80793, 84231, 103635, 134655, 140385, 188517, 314195, 403965, 421155, 439873, 565551, 942585, 1319619, 2199365, 2827755, 3958857, 6598095, 19794285]

約数ペア:

[(1, 19794285), (3, 6598095), (5, 3958857), (7, 2827755), (9, 2199365), (15, 1319619), (21, 942585), (35, 565551), (45, 439873), (47, 421155), (49, 403965), (63, 314195), (105, 188517), (141, 140385), (147, 134655), (191, 103635), (235, 84231), (245, 80793), (315, 62839), (329, 60165), (423, 46795), (441, 44885), (573, 34545), (705, 28077), (735, 26931), (955, 20727), (987, 20055), (1337, 14805), (1645, 12033), (1719, 11515), (2115, 9359), (2205, 8977), (2303, 8595), (2865, 6909), (2961, 6685), (4011, 4935)]