20402859358

素因数分解:

$2^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{197}}^1\times {\mathrm{379}}^1$

素因数の和:865

約数の個数: 64

約数和(自身を含む): 35754048000

約数和(自身を除く): 15351188642

約数列:

[1, 2, 7, 14, 131, 149, 197, 262, 298, 379, 394, 758, 917, 1043, 1379, 1834, 2086, 2653, 2758, 5306, 19519, 25807, 29353, 39038, 49649, 51614, 56471, 58706, 74663, 99298, 112942, 136633, 149326, 180649, 205471, 273266, 347543, 361298, 395297, 410942, 522641, 695086, 790594, 1045282, 3845243, 7397701, 7690486, 9780853, 11124787, 14795402, 19561706, 22249574, 26916701, 51783907, 53833402, 68465971, 77873509, 103567814, 136931942, 155747018, 1457347097, 2914694194, 10201429679, 20402859358]

約数ペア:

[(1, 20402859358), (2, 10201429679), (7, 2914694194), (14, 1457347097), (131, 155747018), (149, 136931942), (197, 103567814), (262, 77873509), (298, 68465971), (379, 53833402), (394, 51783907), (758, 26916701), (917, 22249574), (1043, 19561706), (1379, 14795402), (1834, 11124787), (2086, 9780853), (2653, 7690486), (2758, 7397701), (5306, 3845243), (19519, 1045282), (25807, 790594), (29353, 695086), (39038, 522641), (49649, 410942), (51614, 395297), (56471, 361298), (58706, 347543), (74663, 273266), (99298, 205471), (112942, 180649), (136633, 149326)]