21519420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{587}}^1$

素因数の和:659

約数の個数: 96

約数和(自身を含む): 66382848

約数和(自身を除く): 44863428

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 47, 52, 60, 65, 78, 94, 130, 141, 156, 188, 195, 235, 260, 282, 390, 470, 564, 587, 611, 705, 780, 940, 1174, 1222, 1410, 1761, 1833, 2348, 2444, 2820, 2935, 3055, 3522, 3666, 5870, 6110, 7044, 7332, 7631, 8805, 9165, 11740, 12220, 15262, 17610, 18330, 22893, 27589, 30524, 35220, 36660, 38155, 45786, 55178, 76310, 82767, 91572, 110356, 114465, 137945, 152620, 165534, 228930, 275890, 331068, 358657, 413835, 457860, 551780, 717314, 827670, 1075971, 1434628, 1655340, 1793285, 2151942, 3586570, 4303884, 5379855, 7173140, 10759710, 21519420]

約数ペア:

[(1, 21519420), (2, 10759710), (3, 7173140), (4, 5379855), (5, 4303884), (6, 3586570), (10, 2151942), (12, 1793285), (13, 1655340), (15, 1434628), (20, 1075971), (26, 827670), (30, 717314), (39, 551780), (47, 457860), (52, 413835), (60, 358657), (65, 331068), (78, 275890), (94, 228930), (130, 165534), (141, 152620), (156, 137945), (188, 114465), (195, 110356), (235, 91572), (260, 82767), (282, 76310), (390, 55178), (470, 45786), (564, 38155), (587, 36660), (611, 35220), (705, 30524), (780, 27589), (940, 22893), (1174, 18330), (1222, 17610), (1410, 15262), (1761, 12220), (1833, 11740), (2348, 9165), (2444, 8805), (2820, 7631), (2935, 7332), (3055, 7044), (3522, 6110), (3666, 5870)]