21551390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 46687104

約数和(自身を除く): 25135714

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 53, 70, 74, 106, 157, 185, 259, 265, 314, 370, 371, 518, 530, 742, 785, 1099, 1295, 1570, 1855, 1961, 2198, 2590, 3710, 3922, 5495, 5809, 8321, 9805, 10990, 11618, 13727, 16642, 19610, 27454, 29045, 40663, 41605, 58090, 58247, 68635, 81326, 83210, 116494, 137270, 203315, 291235, 307877, 406630, 582470, 615754, 1539385, 2155139, 3078770, 4310278, 10775695, 21551390]

約数ペア:

[(1, 21551390), (2, 10775695), (5, 4310278), (7, 3078770), (10, 2155139), (14, 1539385), (35, 615754), (37, 582470), (53, 406630), (70, 307877), (74, 291235), (106, 203315), (157, 137270), (185, 116494), (259, 83210), (265, 81326), (314, 68635), (370, 58247), (371, 58090), (518, 41605), (530, 40663), (742, 29045), (785, 27454), (1099, 19610), (1295, 16642), (1570, 13727), (1855, 11618), (1961, 10990), (2198, 9805), (2590, 8321), (3710, 5809), (3922, 5495)]