19686225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 35733824

約数和(自身を除く): 16047599

約数列:

[1, 3, 5, 13, 15, 25, 39, 61, 65, 75, 183, 195, 305, 325, 331, 793, 915, 975, 993, 1525, 1655, 2379, 3965, 4303, 4575, 4965, 8275, 11895, 12909, 19825, 20191, 21515, 24825, 59475, 60573, 64545, 100955, 107575, 262483, 302865, 322725, 504775, 787449, 1312415, 1514325, 3937245, 6562075, 19686225]

約数ペア:

[(1, 19686225), (3, 6562075), (5, 3937245), (13, 1514325), (15, 1312415), (25, 787449), (39, 504775), (61, 322725), (65, 302865), (75, 262483), (183, 107575), (195, 100955), (305, 64545), (325, 60573), (331, 59475), (793, 24825), (915, 21515), (975, 20191), (993, 19825), (1525, 12909), (1655, 11895), (2379, 8275), (3965, 4965), (4303, 4575)]