19880910

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 61885440

約数和(自身を除く): 42004530

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 67, 70, 90, 105, 126, 134, 135, 157, 189, 201, 210, 270, 314, 315, 335, 378, 402, 469, 471, 603, 630, 670, 785, 938, 942, 945, 1005, 1099, 1206, 1407, 1413, 1570, 1809, 1890, 2010, 2198, 2345, 2355, 2814, 2826, 3015, 3297, 3618, 4221, 4239, 4690, 4710, 5495, 6030, 6594, 7035, 7065, 8442, 8478, 9045, 9891, 10519, 10990, 12663, 14070, 14130, 16485, 18090, 19782, 21038, 21105, 21195, 25326, 29673, 31557, 32970, 42210, 42390, 49455, 52595, 59346, 63114, 63315, 73633, 94671, 98910, 105190, 126630, 147266, 148365, 157785, 189342, 220899, 284013, 296730, 315570, 368165, 441798, 473355, 568026, 662697, 736330, 946710, 1104495, 1325394, 1420065, 1988091, 2208990, 2840130, 3313485, 3976182, 6626970, 9940455, 19880910]

約数ペア:

[(1, 19880910), (2, 9940455), (3, 6626970), (5, 3976182), (6, 3313485), (7, 2840130), (9, 2208990), (10, 1988091), (14, 1420065), (15, 1325394), (18, 1104495), (21, 946710), (27, 736330), (30, 662697), (35, 568026), (42, 473355), (45, 441798), (54, 368165), (63, 315570), (67, 296730), (70, 284013), (90, 220899), (105, 189342), (126, 157785), (134, 148365), (135, 147266), (157, 126630), (189, 105190), (201, 98910), (210, 94671), (270, 73633), (314, 63315), (315, 63114), (335, 59346), (378, 52595), (402, 49455), (469, 42390), (471, 42210), (603, 32970), (630, 31557), (670, 29673), (785, 25326), (938, 21195), (942, 21105), (945, 21038), (1005, 19782), (1099, 18090), (1206, 16485), (1407, 14130), (1413, 14070), (1570, 12663), (1809, 10990), (1890, 10519), (2010, 9891), (2198, 9045), (2345, 8478), (2355, 8442), (2814, 7065), (2826, 7035), (3015, 6594), (3297, 6030), (3618, 5495), (4221, 4710), (4239, 4690)]