21567910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{173}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 48408192

約数和(自身を除く): 26840282

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 137, 173, 182, 274, 346, 455, 685, 865, 910, 959, 1211, 1370, 1730, 1781, 1918, 2249, 2422, 3562, 4498, 4795, 6055, 8905, 9590, 11245, 12110, 12467, 15743, 17810, 22490, 23701, 24934, 31486, 47402, 62335, 78715, 118505, 124670, 157430, 165907, 237010, 308113, 331814, 616226, 829535, 1540565, 1659070, 2156791, 3081130, 4313582, 10783955, 21567910]

約数ペア:

[(1, 21567910), (2, 10783955), (5, 4313582), (7, 3081130), (10, 2156791), (13, 1659070), (14, 1540565), (26, 829535), (35, 616226), (65, 331814), (70, 308113), (91, 237010), (130, 165907), (137, 157430), (173, 124670), (182, 118505), (274, 78715), (346, 62335), (455, 47402), (685, 31486), (865, 24934), (910, 23701), (959, 22490), (1211, 17810), (1370, 15743), (1730, 12467), (1781, 12110), (1918, 11245), (2249, 9590), (2422, 8905), (3562, 6055), (4498, 4795)]