221001105

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{409}}^1$

素因数の和:610

約数の個数: 64

約数和(自身を含む): 406667520

約数和(自身を除く): 185666415

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 163, 195, 221, 255, 409, 489, 663, 815, 1105, 1227, 2045, 2119, 2445, 2771, 3315, 5317, 6135, 6357, 6953, 8313, 10595, 13855, 15951, 20859, 26585, 31785, 34765, 36023, 41565, 66667, 79755, 90389, 104295, 108069, 180115, 200001, 271167, 333335, 451945, 540345, 866671, 1000005, 1133339, 1355835, 2600013, 3400017, 4333355, 5666695, 13000065, 14733407, 17000085, 44200221, 73667035, 221001105]

約数ペア:

[(1, 221001105), (3, 73667035), (5, 44200221), (13, 17000085), (15, 14733407), (17, 13000065), (39, 5666695), (51, 4333355), (65, 3400017), (85, 2600013), (163, 1355835), (195, 1133339), (221, 1000005), (255, 866671), (409, 540345), (489, 451945), (663, 333335), (815, 271167), (1105, 200001), (1227, 180115), (2045, 108069), (2119, 104295), (2445, 90389), (2771, 79755), (3315, 66667), (5317, 41565), (6135, 36023), (6357, 34765), (6953, 31785), (8313, 26585), (10595, 20859), (13855, 15951)]