212381620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 536256000

約数和(自身を除く): 323874380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 31, 38, 44, 55, 62, 76, 95, 110, 121, 124, 149, 155, 190, 209, 220, 242, 298, 310, 341, 380, 418, 484, 589, 596, 605, 620, 682, 745, 836, 1045, 1178, 1210, 1364, 1490, 1639, 1705, 2090, 2299, 2356, 2420, 2831, 2945, 2980, 3278, 3410, 3751, 4180, 4598, 4619, 5662, 5890, 6479, 6556, 6820, 7502, 8195, 9196, 9238, 11324, 11495, 11780, 12958, 14155, 15004, 16390, 18029, 18476, 18755, 22990, 23095, 25916, 28310, 31141, 32395, 32780, 36058, 37510, 45980, 46190, 50809, 56620, 62282, 64790, 71269, 72116, 75020, 87761, 90145, 92380, 101618, 124564, 129580, 142538, 155705, 175522, 180290, 203236, 254045, 285076, 311410, 342551, 351044, 356345, 360580, 438805, 508090, 558899, 622820, 685102, 712690, 877610, 965371, 1016180, 1117798, 1370204, 1425380, 1712755, 1755220, 1930742, 2235596, 2794495, 3425510, 3861484, 4826855, 5588990, 6851020, 9653710, 10619081, 11177980, 19307420, 21238162, 42476324, 53095405, 106190810, 212381620]

約数ペア:

[(1, 212381620), (2, 106190810), (4, 53095405), (5, 42476324), (10, 21238162), (11, 19307420), (19, 11177980), (20, 10619081), (22, 9653710), (31, 6851020), (38, 5588990), (44, 4826855), (55, 3861484), (62, 3425510), (76, 2794495), (95, 2235596), (110, 1930742), (121, 1755220), (124, 1712755), (149, 1425380), (155, 1370204), (190, 1117798), (209, 1016180), (220, 965371), (242, 877610), (298, 712690), (310, 685102), (341, 622820), (380, 558899), (418, 508090), (484, 438805), (589, 360580), (596, 356345), (605, 351044), (620, 342551), (682, 311410), (745, 285076), (836, 254045), (1045, 203236), (1178, 180290), (1210, 175522), (1364, 155705), (1490, 142538), (1639, 129580), (1705, 124564), (2090, 101618), (2299, 92380), (2356, 90145), (2420, 87761), (2831, 75020), (2945, 72116), (2980, 71269), (3278, 64790), (3410, 62282), (3751, 56620), (4180, 50809), (4598, 46190), (4619, 45980), (5662, 37510), (5890, 36058), (6479, 32780), (6556, 32395), (6820, 31141), (7502, 28310), (8195, 25916), (9196, 23095), (9238, 22990), (11324, 18755), (11495, 18476), (11780, 18029), (12958, 16390), (14155, 15004)]