15431780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 40830720

約数和(自身を除く): 25398940

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 61, 65, 70, 91, 122, 130, 139, 140, 182, 244, 260, 278, 305, 364, 427, 455, 556, 610, 695, 793, 854, 910, 973, 1220, 1390, 1586, 1708, 1807, 1820, 1946, 2135, 2780, 3172, 3614, 3892, 3965, 4270, 4865, 5551, 7228, 7930, 8479, 8540, 9035, 9730, 11102, 12649, 15860, 16958, 18070, 19460, 22204, 25298, 27755, 33916, 36140, 42395, 50596, 55510, 59353, 63245, 84790, 110227, 111020, 118706, 126490, 169580, 220454, 237412, 252980, 296765, 440908, 551135, 593530, 771589, 1102270, 1187060, 1543178, 2204540, 3086356, 3857945, 7715890, 15431780]

約数ペア:

[(1, 15431780), (2, 7715890), (4, 3857945), (5, 3086356), (7, 2204540), (10, 1543178), (13, 1187060), (14, 1102270), (20, 771589), (26, 593530), (28, 551135), (35, 440908), (52, 296765), (61, 252980), (65, 237412), (70, 220454), (91, 169580), (122, 126490), (130, 118706), (139, 111020), (140, 110227), (182, 84790), (244, 63245), (260, 59353), (278, 55510), (305, 50596), (364, 42395), (427, 36140), (455, 33916), (556, 27755), (610, 25298), (695, 22204), (793, 19460), (854, 18070), (910, 16958), (973, 15860), (1220, 12649), (1390, 11102), (1586, 9730), (1708, 9035), (1807, 8540), (1820, 8479), (1946, 7930), (2135, 7228), (2780, 5551), (3172, 4865), (3614, 4270), (3892, 3965)]