21297195

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^3\times {\mathrm{23}}^1$

素因数の和:94

約数の個数: 64

約数和(自身を含む): 41702400

約数和(自身を除く): 20405205

約数列:

[1, 3, 5, 9, 15, 19, 23, 27, 45, 57, 69, 95, 115, 135, 171, 207, 285, 345, 361, 437, 513, 621, 855, 1035, 1083, 1311, 1805, 2185, 2565, 3105, 3249, 3933, 5415, 6555, 6859, 8303, 9747, 11799, 16245, 19665, 20577, 24909, 34295, 41515, 48735, 58995, 61731, 74727, 102885, 124545, 157757, 185193, 224181, 308655, 373635, 473271, 788785, 925965, 1120905, 1419813, 2366355, 4259439, 7099065, 21297195]

約数ペア:

[(1, 21297195), (3, 7099065), (5, 4259439), (9, 2366355), (15, 1419813), (19, 1120905), (23, 925965), (27, 788785), (45, 473271), (57, 373635), (69, 308655), (95, 224181), (115, 185193), (135, 157757), (171, 124545), (207, 102885), (285, 74727), (345, 61731), (361, 58995), (437, 48735), (513, 41515), (621, 34295), (855, 24909), (1035, 20577), (1083, 19665), (1311, 16245), (1805, 11799), (2185, 9747), (2565, 8303), (3105, 6859), (3249, 6555), (3933, 5415)]