81996590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{373}}^1$

素因数の和:501

約数の個数: 64

約数和(自身を含む): 169646400

約数和(自身を除く): 87649810

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 89, 95, 130, 178, 190, 247, 373, 445, 494, 746, 890, 1157, 1235, 1691, 1865, 2314, 2470, 3382, 3730, 4849, 5785, 7087, 8455, 9698, 11570, 14174, 16910, 21983, 24245, 33197, 35435, 43966, 48490, 66394, 70870, 92131, 109915, 165985, 184262, 219830, 331970, 431561, 460655, 630743, 863122, 921310, 1261486, 2157805, 3153715, 4315610, 6307430, 8199659, 16399318, 40998295, 81996590]

約数ペア:

[(1, 81996590), (2, 40998295), (5, 16399318), (10, 8199659), (13, 6307430), (19, 4315610), (26, 3153715), (38, 2157805), (65, 1261486), (89, 921310), (95, 863122), (130, 630743), (178, 460655), (190, 431561), (247, 331970), (373, 219830), (445, 184262), (494, 165985), (746, 109915), (890, 92131), (1157, 70870), (1235, 66394), (1691, 48490), (1865, 43966), (2314, 35435), (2470, 33197), (3382, 24245), (3730, 21983), (4849, 16910), (5785, 14174), (7087, 11570), (8455, 9698)]