19997383868

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{163543}}^1$

素因数の和:163962

約数の個数: 48

約数和(自身を含む): 43740824064

約数和(自身を除く): 23743440196

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 397, 794, 1588, 2779, 4367, 5558, 8734, 11116, 17468, 30569, 61138, 122276, 163543, 327086, 654172, 1144801, 1798973, 2289602, 3597946, 4579204, 7195892, 12592811, 25185622, 50371244, 64926571, 129853142, 259706284, 454485997, 714192281, 908971994, 1428384562, 1817943988, 2856769124, 4999345967, 9998691934, 19997383868]

約数ペア:

[(1, 19997383868), (2, 9998691934), (4, 4999345967), (7, 2856769124), (11, 1817943988), (14, 1428384562), (22, 908971994), (28, 714192281), (44, 454485997), (77, 259706284), (154, 129853142), (308, 64926571), (397, 50371244), (794, 25185622), (1588, 12592811), (2779, 7195892), (4367, 4579204), (5558, 3597946), (8734, 2289602), (11116, 1798973), (17468, 1144801), (30569, 654172), (61138, 327086), (122276, 163543)]