19515990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{307}}^1$

素因数の和:493

約数の個数: 64

約数和(自身を含む): 50916096

約数和(自身を除く): 31400106

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 163, 195, 307, 326, 390, 489, 614, 815, 921, 978, 1535, 1630, 1842, 2119, 2445, 3070, 3991, 4238, 4605, 4890, 6357, 7982, 9210, 10595, 11973, 12714, 19955, 21190, 23946, 31785, 39910, 50041, 59865, 63570, 100082, 119730, 150123, 250205, 300246, 500410, 650533, 750615, 1301066, 1501230, 1951599, 3252665, 3903198, 6505330, 9757995, 19515990]

約数ペア:

[(1, 19515990), (2, 9757995), (3, 6505330), (5, 3903198), (6, 3252665), (10, 1951599), (13, 1501230), (15, 1301066), (26, 750615), (30, 650533), (39, 500410), (65, 300246), (78, 250205), (130, 150123), (163, 119730), (195, 100082), (307, 63570), (326, 59865), (390, 50041), (489, 39910), (614, 31785), (815, 23946), (921, 21190), (978, 19955), (1535, 12714), (1630, 11973), (1842, 10595), (2119, 9210), (2445, 7982), (3070, 6357), (3991, 4890), (4238, 4605)]