19953990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1667}}^1$

素因数の和:1706

約数の個数: 96

約数和(自身を含む): 62449920

約数和(自身を除く): 42495930

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 30, 35, 38, 42, 45, 57, 63, 70, 90, 95, 105, 114, 126, 133, 171, 190, 210, 266, 285, 315, 342, 399, 570, 630, 665, 798, 855, 1197, 1330, 1667, 1710, 1995, 2394, 3334, 3990, 5001, 5985, 8335, 10002, 11669, 11970, 15003, 16670, 23338, 25005, 30006, 31673, 35007, 50010, 58345, 63346, 70014, 75015, 95019, 105021, 116690, 150030, 158365, 175035, 190038, 210042, 221711, 285057, 316730, 350070, 443422, 475095, 525105, 570114, 665133, 950190, 1050210, 1108555, 1330266, 1425285, 1995399, 2217110, 2850570, 3325665, 3990798, 6651330, 9976995, 19953990]

約数ペア:

[(1, 19953990), (2, 9976995), (3, 6651330), (5, 3990798), (6, 3325665), (7, 2850570), (9, 2217110), (10, 1995399), (14, 1425285), (15, 1330266), (18, 1108555), (19, 1050210), (21, 950190), (30, 665133), (35, 570114), (38, 525105), (42, 475095), (45, 443422), (57, 350070), (63, 316730), (70, 285057), (90, 221711), (95, 210042), (105, 190038), (114, 175035), (126, 158365), (133, 150030), (171, 116690), (190, 105021), (210, 95019), (266, 75015), (285, 70014), (315, 63346), (342, 58345), (399, 50010), (570, 35007), (630, 31673), (665, 30006), (798, 25005), (855, 23338), (1197, 16670), (1330, 15003), (1667, 11970), (1710, 11669), (1995, 10002), (2394, 8335), (3334, 5985), (3990, 5001)]