21148049655

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{911}}^1\times {\mathrm{1429}}^1$

素因数の和:2389

約数の個数: 72

約数和(自身を含む): 38757026880

約数和(自身を除く): 17608977225

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 361, 855, 911, 1083, 1429, 1805, 2733, 3249, 4287, 4555, 5415, 7145, 8199, 12861, 13665, 16245, 17309, 21435, 27151, 40995, 51927, 64305, 81453, 86545, 135755, 155781, 244359, 259635, 328871, 407265, 515869, 778905, 986613, 1221795, 1301819, 1547607, 1644355, 2579345, 2959839, 3905457, 4642821, 4933065, 6509095, 7738035, 11716371, 14799195, 19527285, 23214105, 24734561, 58581855, 74203683, 123672805, 222611049, 371018415, 469956659, 1113055245, 1409869977, 2349783295, 4229609931, 7049349885, 21148049655]

約数ペア:

[(1, 21148049655), (3, 7049349885), (5, 4229609931), (9, 2349783295), (15, 1409869977), (19, 1113055245), (45, 469956659), (57, 371018415), (95, 222611049), (171, 123672805), (285, 74203683), (361, 58581855), (855, 24734561), (911, 23214105), (1083, 19527285), (1429, 14799195), (1805, 11716371), (2733, 7738035), (3249, 6509095), (4287, 4933065), (4555, 4642821), (5415, 3905457), (7145, 2959839), (8199, 2579345), (12861, 1644355), (13665, 1547607), (16245, 1301819), (17309, 1221795), (21435, 986613), (27151, 778905), (40995, 515869), (51927, 407265), (64305, 328871), (81453, 259635), (86545, 244359), (135755, 155781)]