21191300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{16301}}^1$

素因数の和:16328

約数の個数: 36

約数和(自身を含む): 49525476

約数和(自身を除く): 28334176

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 16301, 32602, 65204, 81505, 163010, 211913, 326020, 407525, 423826, 815050, 847652, 1059565, 1630100, 2119130, 4238260, 5297825, 10595650, 21191300]

約数ペア:

[(1, 21191300), (2, 10595650), (4, 5297825), (5, 4238260), (10, 2119130), (13, 1630100), (20, 1059565), (25, 847652), (26, 815050), (50, 423826), (52, 407525), (65, 326020), (100, 211913), (130, 163010), (260, 81505), (325, 65204), (650, 32602), (1300, 16301)]