19807840

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:224

約数の個数: 96

約数和(自身を含む): 51438240

約数和(自身を除く): 31630400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 89, 104, 107, 130, 160, 178, 208, 214, 260, 356, 416, 428, 445, 520, 535, 712, 856, 890, 1040, 1070, 1157, 1391, 1424, 1712, 1780, 2080, 2140, 2314, 2782, 2848, 3424, 3560, 4280, 4628, 5564, 5785, 6955, 7120, 8560, 9256, 9523, 11128, 11570, 13910, 14240, 17120, 18512, 19046, 22256, 23140, 27820, 37024, 38092, 44512, 46280, 47615, 55640, 76184, 92560, 95230, 111280, 123799, 152368, 185120, 190460, 222560, 247598, 304736, 380920, 495196, 618995, 761840, 990392, 1237990, 1523680, 1980784, 2475980, 3961568, 4951960, 9903920, 19807840]

約数ペア:

[(1, 19807840), (2, 9903920), (4, 4951960), (5, 3961568), (8, 2475980), (10, 1980784), (13, 1523680), (16, 1237990), (20, 990392), (26, 761840), (32, 618995), (40, 495196), (52, 380920), (65, 304736), (80, 247598), (89, 222560), (104, 190460), (107, 185120), (130, 152368), (160, 123799), (178, 111280), (208, 95230), (214, 92560), (260, 76184), (356, 55640), (416, 47615), (428, 46280), (445, 44512), (520, 38092), (535, 37024), (712, 27820), (856, 23140), (890, 22256), (1040, 19046), (1070, 18512), (1157, 17120), (1391, 14240), (1424, 13910), (1712, 11570), (1780, 11128), (2080, 9523), (2140, 9256), (2314, 8560), (2782, 7120), (2848, 6955), (3424, 5785), (3560, 5564), (4280, 4628)]