21913430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:365

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 27852970

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 149, 154, 191, 298, 382, 385, 745, 770, 955, 1043, 1337, 1490, 1639, 1910, 2086, 2101, 2674, 3278, 4202, 5215, 6685, 8195, 10430, 10505, 11473, 13370, 14707, 16390, 21010, 22946, 28459, 29414, 56918, 57365, 73535, 114730, 142295, 147070, 199213, 284590, 313049, 398426, 626098, 996065, 1565245, 1992130, 2191343, 3130490, 4382686, 10956715, 21913430]

約数ペア:

[(1, 21913430), (2, 10956715), (5, 4382686), (7, 3130490), (10, 2191343), (11, 1992130), (14, 1565245), (22, 996065), (35, 626098), (55, 398426), (70, 313049), (77, 284590), (110, 199213), (149, 147070), (154, 142295), (191, 114730), (298, 73535), (382, 57365), (385, 56918), (745, 29414), (770, 28459), (955, 22946), (1043, 21010), (1337, 16390), (1490, 14707), (1639, 13370), (1910, 11473), (2086, 10505), (2101, 10430), (2674, 8195), (3278, 6685), (4202, 5215)]